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50 TopicsSearch Less, Build More: Inner Sourcing with GitHub Copilot and ADO MCP Server
Developers burn cycles context‑switching: opening five repos to find a logging example, searching a wiki for a data masking rule, scrolling chat history for the latest pipeline pattern. Organisations that I speak to are often on the path of transformational platform engineering projects but always have the fear or doubt of "what if my engineers don't use these resources". While projects like Backstage still play a pivotal role in inner sourcing and discoverability I also empathise with developers who would argue "How would I even know in the first place, which modules have or haven't been created for reuse". In this blog we explore how we can ensure organisational standards and developer satisfaction without any heavy lifting on either side, no custom model training, no rewriting or relocating of repositories and no stagnant local data. Using GitHub Copilot + Azure DevOps MCP server (with the free `code_search` extension) we turn the IDE into an organizational knowledge interface. Instead of guessing or re‑implementing, engineers can start scaffolding projects or solving issues as they would normally (hopefully using Copilot) and without extra prompting. GitHub Copilot can lean into organisational standards and ensure recommendations are made with code snippets directly generated from existing examples. What Is the Azure DevOps MCP Server + code_search Extension? MCP (Model Context Protocol) is an open standard that lets agents (like GitHub Copilot) pull in structured, on-demand context from external systems. MCP servers contain natural language explanations of the tools that the agent can utilise allowing dynamic decision making of when to implement certain toolsets over others. The Azure DevOps MCP Server is the ADO Product Team's implementation of that standard. It exposes your ADO environment in a way Copilot can consume. Out of the box it gives you access to: Projects – list and navigate across projects in your organization. Repositories – browse repos, branches, and files. Work items – surface user stories, bugs, or acceptance criteria. Wiki's – pull policies, standards, and documentation. This means Copilot can ground its answers in live ADO content, instead of hallucinating or relying only on what’s in the current editor window. The ADO server runs locally from your own machine to ensure that all sensitive project information remains within your secure network boundary. This also means that existing permissions on ADO objects such as Projects or Repositories are respected. Wiki search tooling available out of the box with ADO MCP server is very useful however if I am honest I have seen these wiki's go unused with documentation being stored elsewhere either inside the repository or in a project management tool. This means any tool that needs to implement code requires the ability to accurately search the code stored in the repositories themself. That is where the code_search extension enablement in ADO is so important. Most organisations have this enabled already however it is worth noting that this pre-requisite is the real unlock of cross-repo search. This allows for Copilot to: Query for symbols, snippets, or keywords across all repos. Retrieve usage examples from code, not just docs. Locate standards (like logging wrappers or retry policies) wherever they live. Back every recommendation with specific source lines. In short: MCP connects Copilot to Azure DevOps. code_search makes that connection powerful by turning it into a discovery engine. What is the relevance of Copilot Instructions? One of the less obvious but most powerful features of GitHub Copilot is its ability to follow instructions files. Copilot automatically looks for these files and uses them as a “playbook” for how it should behave. There are different types of instructions you can provide: Organisational instructions – apply across your entire workspace, regardless of which repo you’re in. Repo-specific instructions – scoped to a particular repository, useful when one project has unique standards or patterns. Personal instructions – smaller overrides layered on top of global rules when a local exception applies. (Stored in .github/copilot-instructions.md) In this solution, I’m using a single personal instructions file. It tells Copilot: When to search (e.g., always query repos and wikis before answering a standards question). Where to look (Azure DevOps repos, wikis, and with code_search, the code itself). How to answer (responses must cite the repo/file/line or wiki page; if no source is found, say so). How to resolve conflicts (prefer dated wiki entries over older README fragments). As a small example, a section of a Copilot instruction file could look like this: # GitHub Copilot Instructions for Azure DevOps MCP Integration This project uses Azure DevOps with MCP server integration to provide organizational context awareness. Always check to see if the Azure DevOps MCP server has a tool relevant to the user's request. ## Core Principles ### 1. Azure DevOps Integration - **Always prioritize Azure DevOps MCP tools** when users ask about: - Work items, stories, bugs, tasks - Pull requests and code reviews - Build pipelines and deployments - Repository operations and branch management - Wiki pages and documentation - Test plans and test cases - Project and team information ### 2. Organizational Context Awareness - Before suggesting solutions, **check existing organizational patterns** by: - Searching code across repositories for similar implementations - Referencing established coding standards and frameworks - Looking for existing shared libraries and utilities - Checking architectural decision records (ADRs) in wikis ### 3. Cross-Repository Intelligence - When providing code suggestions: - **Search for existing patterns** in other repositories first - **Reference shared libraries** and common utilities - **Maintain consistency** with organizational standards - **Suggest reusable components** when appropriate ## Tool Usage Guidelines ### Work Items and Project Management When users mention bugs, features, tasks, or project planning: ``` ✅ Use: wit_my_work_items, wit_create_work_item, wit_update_work_item ✅ Use: wit_list_backlogs, wit_get_work_items_for_iteration ✅ Use: work_list_team_iterations, core_list_projects The result... To test this I created 3 ADO Projects each with between 1-2 repositories. The repositories were light with only ReadMe's inside containing descriptions of the "repo" and some code snippets examples for usage. I have then created a brand-new workspace with no context apart from a Copilot instructions document (which could be part of a repo scaffold or organisation wide) which tells Copilot to search code and the wikis across all ADO projects in my demo environment. It returns guidance and standards from all available repo's and starts to use it to formulate its response. In the screenshot I have highlighted some key parts with red boxes. The first being a section of the readme that Copilot has identified in its response, that part also highlighted within CoPilot chat response. I have highlighted the rather generic prompt I used to get this response at the bottom of that window too. Above I have highlighted Copilot using the MCP server tooling searching through projects, repo's and code. Finally the largest box highlights the instructions given to Copilot on how to search and how easily these could be optimised or changed depending on the requirements and organisational coding standards. How did I implement this? Implementation is actually incredibly simple. As mentioned I created multiple projects and repositories within my ADO Organisation in order to test cross-project & cross-repo discovery. I then did the following: Enable code_search - in your Azure DevOps organization (Marketplace → install extension). Login to Azure - Use the AZ CLI to authenticate to Azure with "az login". Create vscode/mcp.json file - Snippet is provided below, the organisation name should be changed to your organisations name. Start and enable your MCP server - In the mcp.json file you should see a "Start" button. Using the snippet below you will be prompted to add your organisation name. Ensure your Copilot agent has access to the server under "tools" too. View this setup guide for full setup instructions (azure-devops-mcp/docs/GETTINGSTARTED.md at main · microsoft/azure-devops-mcp) Create a Copilot Instructions file - with a search-first directive. I have inserted the full version used in this demo at the bottom of the article. Experiment with Prompts – Start generic (“How do we secure APIs?”). Review the output and tools used and then tailor your instructions. Considerations While this is a great approach I do still have some considerations when going to production. Latency - Using MCP tooling on every request will add some latency to developer requests. We can look at optimizing usage through copilot instructions to better identify when Copilot should or shouldn't use the ADO MCP server. Complex Projects and Repositories - While I have demonstrated cross project and cross repository retrieval my demo environment does not truly simulate an enterprise ADO environment. Performance should be tested and closely monitored as organisational complexity increases. Public Preview - The ADO MCP server is moving quickly but is currently still public preview. We have demonstrated in this article how quickly we can make our Azure DevOps content discoverable. While their are considerations moving forward this showcases a direction towards agentic inner sourcing. Feel free to comment below how you think this approach could be extended or augmented for other use cases! Resources MCP Server Config (/.vscode/mcp.json) { "inputs": [ { "id": "ado_org", "type": "promptString", "description": "Azure DevOps organization name (e.g. 'contoso')" } ], "servers": { "ado": { "type": "stdio", "command": "npx", "args": ["-y", "@azure-devops/mcp", "${input:ado_org}"] } } } Copilot Instructions (/.github/copilot-instructions.md) # GitHub Copilot Instructions for Azure DevOps MCP Integration This project uses Azure DevOps with MCP server integration to provide organizational context awareness. Always check to see if the Azure DevOps MCP server has a tool relevant to the user's request. ## Core Principles ### 1. Azure DevOps Integration - **Always prioritize Azure DevOps MCP tools** when users ask about: - Work items, stories, bugs, tasks - Pull requests and code reviews - Build pipelines and deployments - Repository operations and branch management - Wiki pages and documentation - Test plans and test cases - Project and team information ### 2. Organizational Context Awareness - Before suggesting solutions, **check existing organizational patterns** by: - Searching code across repositories for similar implementations - Referencing established coding standards and frameworks - Looking for existing shared libraries and utilities - Checking architectural decision records (ADRs) in wikis ### 3. Cross-Repository Intelligence - When providing code suggestions: - **Search for existing patterns** in other repositories first - **Reference shared libraries** and common utilities - **Maintain consistency** with organizational standards - **Suggest reusable components** when appropriate ## Tool Usage Guidelines ### Work Items and Project Management When users mention bugs, features, tasks, or project planning: ``` ✅ Use: wit_my_work_items, wit_create_work_item, wit_update_work_item ✅ Use: wit_list_backlogs, wit_get_work_items_for_iteration ✅ Use: work_list_team_iterations, core_list_projects ``` ### Code and Repository Operations When users ask about code, branches, or pull requests: ``` ✅ Use: repo_list_repos_by_project, repo_list_pull_requests_by_repo ✅ Use: repo_list_branches_by_repo, repo_search_commits ✅ Use: search_code for finding patterns across repositories ``` ### Documentation and Knowledge Sharing When users need documentation or want to create/update docs: ``` ✅ Use: wiki_list_wikis, wiki_get_page_content, wiki_create_or_update_page ✅ Use: search_wiki for finding existing documentation ``` ### Build and Deployment When users ask about builds, deployments, or CI/CD: ``` ✅ Use: pipelines_get_builds, pipelines_get_build_definitions ✅ Use: pipelines_run_pipeline, pipelines_get_build_status ``` ## Response Patterns ### 1. Discovery First Before providing solutions, always discover organizational context: ``` "Let me first check what patterns exist in your organization..." → Search code, check repositories, review existing work items ``` ### 2. Reference Organizational Standards When suggesting code or approaches: ``` "Based on patterns I found in your [RepositoryName] repository..." "Following your organization's standard approach seen in..." "This aligns with the pattern established in [TeamName]'s implementation..." ``` ### 3. Actionable Integration Always offer to create or update Azure DevOps artifacts: ``` "I can create a work item for this enhancement..." "Should I update the wiki page with this new pattern?" "Let me link this to the current iteration..." ``` ## Specific Scenarios ### New Feature Development 1. **Search existing repositories** for similar features 2. **Check architectural patterns** and shared libraries 3. **Review related work items** and planning documents 4. **Suggest implementation** based on organizational standards 5. **Offer to create work items** and documentation ### Bug Investigation 1. **Search for similar issues** across repositories and work items 2. **Check related builds** and recent changes 3. **Review test results** and failure patterns 4. **Provide solution** based on organizational practices 5. **Offer to create/update** bug work items and documentation ### Code Review and Standards 1. **Compare against organizational patterns** found in other repositories 2. **Reference coding standards** from wiki documentation 3. **Suggest improvements** based on established practices 4. **Check for reusable components** that could be leveraged ### Documentation Requests 1. **Search existing wikis** for related content 2. **Check for ADRs** and technical documentation 3. **Reference patterns** from similar projects 4. **Offer to create/update** wiki pages with findings ## Error Handling If Azure DevOps MCP tools are not available or fail: 1. **Inform the user** about the limitation 2. **Provide alternative approaches** using available information 3. **Suggest manual steps** for Azure DevOps integration 4. **Offer to help** with configuration if needed ## Best Practices ### Always Do: - ✅ Search organizational context before suggesting solutions - ✅ Reference existing patterns and standards - ✅ Offer to create/update Azure DevOps artifacts - ✅ Maintain consistency with organizational practices - ✅ Provide actionable next steps ### Never Do: - ❌ Suggest solutions without checking organizational context - ❌ Ignore existing patterns and implementations - ❌ Provide generic advice when specific organizational context is available - ❌ Forget to offer Azure DevOps integration opportunities --- **Remember: The goal is to provide intelligent, context-aware assistance that leverages the full organizational knowledge base available through Azure DevOps while maintaining development efficiency and consistency.**1.2KViews1like3CommentsIndustry-Wide Certificate Changes Impacting Azure App Service Certificates
Executive Summary In early 2026, industry-wide changes mandated by browser applications and the CA/B Forum will affect both how TLS certificates are issued as well as their validity period. The CA/B Forum is a vendor body that establishes standards for securing websites and online communications through SSL/TLS certificates. Azure App Service is aligning with these standards for both App Service Managed Certificates (ASMC, free, DigiCert-issued) and App Service Certificates (ASC, paid, GoDaddy-issued). Most customers will experience no disruption. Action is required only if you pin certificates or use them for client authentication (mTLS). Who Should Read This? App Service administrators Security and compliance teams Anyone responsible for certificate management or application security Quick Reference: What’s Changing & What To Do Topic ASMC (Managed, free) ASC (GoDaddy, paid) Required Action New Cert Chain New chain (no action unless pinned) New chain (no action unless pinned) Remove certificate pinning Client Auth EKU Not supported (no action unless cert is used for mTLS) Not supported (no action unless cert is used for mTLS) Transition from mTLS Validity No change (already compliant) Two overlapping certs issued for the full year None (automated) If you do not pin certificates or use them for mTLS, no action is required. Timeline of Key Dates Date Change Action Required Mid-Jan 2026 and after ASMC migrates to new chain ASMC stops supporting client auth EKU Remove certificate pinning if used Transition to alternative authentication if the certificate is used for mTLS Mar 2026 and after ASC validity shortened ASC migrates to new chain ASC stops supporting client auth EKU Remove certificate pinning if used Transition to alternative authentication if the certificate is used for mTLS Actions Checklist For All Users Review your use of App Service certificates. If you do not pin these certificates and do not use them for mTLS, no action is required. If You Pin Certificates (ASMC or ASC) Remove all certificate or chain pinning before their respective key change dates to avoid service disruption. See Best Practices: Certificate Pinning. If You Use Certificates for Client Authentication (mTLS) Switch to an alternative authentication method before their respective key change dates to avoid service disruption, as client authentication EKU will no longer be supported for these certificates. See Sunsetting the client authentication EKU from DigiCert public TLS certificates. See Set Up TLS Mutual Authentication - Azure App Service Details & Rationale Why Are These Changes Happening? These updates are required by major browser programs (e.g., Chrome) and apply to all public CAs. They are designed to enhance security and compliance across the industry. Azure App Service is automating updates to minimize customer impact. What’s Changing? New Certificate Chain Certificates will be issued from a new chain to maintain browser trust. Impact: Remove any certificate pinning to avoid disruption. Removal of Client Authentication EKU Newly issued certificates will not support client authentication EKU. This change aligns with Google Chrome’s root program requirements to enhance security. Impact: If you use these certificates for mTLS, transition to an alternate authentication method. Shortening of Certificate Validity Certificate validity is now limited to a maximum of 200 days. Impact: ASMC is already compliant; ASC will automatically issue two overlapping certificates to cover one year. No billing impact. Frequently Asked Questions (FAQs) Will I lose coverage due to shorter validity? No. For App Service Certificate, App Service will issue two certificates to span the full year you purchased. Is this unique to DigiCert and GoDaddy? No. This is an industry-wide change. Do these changes impact certificates from other CAs? Yes. These changes are an industry-wide change. We recommend you reach out to your certificates’ CA for more information. Do I need to act today? If you do not pin or use these certs for mTLS, no action is required. Glossary ASMC: App Service Managed Certificate (free, DigiCert-issued) ASC: App Service Certificate (paid, GoDaddy-issued) EKU: Extended Key Usage mTLS: Mutual TLS (client certificate authentication) CA/B Forum: Certification Authority/Browser Forum Additional Resources Changes to the Managed TLS Feature Set Up TLS Mutual Authentication Azure App Service Best Practices – Certificate pinning DigiCert Root and Intermediate CA Certificate Updates 2023 Sunsetting the client authentication EKU from DigiCert public TLS certificates Feedback & Support If you have questions or need help, please visit our official support channels or the Microsoft Q&A, where our team and the community can assist you.518Views1like0CommentsImportant Changes to App Service Managed Certificates: Is Your Certificate Affected?
Overview As part of an upcoming industry-wide change, DigiCert, the Certificate Authority (CA) for Azure App Service Managed Certificates (ASMC), is required to migrate to a new validation platform to meet multi-perspective issuance corroboration (MPIC) requirements. While most certificates will not be impacted by this change, certain site configurations and setups may prevent certificate issuance or renewal starting July 28, 2025. Update December 8, 2025 We’ve published an update in November about how App Service Managed Certificates can now be supported on sites that block public access. This reverses the limitation introduced in July 2025, as mentioned in this blog. Note: This blog post reflects a point-in-time update and will not be revised. For the latest and most accurate details on App Service Managed Certificates, please refer to official documentation or subsequent updates. Learn more about the November 2025 update here: Follow-Up to ‘Important Changes to App Service Managed Certificates’: November 2025 Update. August 5, 2025 We’ve published a Microsoft Learn documentation titled App Service Managed Certificate (ASMC) changes – July 28, 2025 that contains more in-depth mitigation guidance and a growing FAQ section to support the changes outlined in this blog post. While the blog currently contains the most complete overview, the documentation will soon be updated to reflect all blog content. Going forward, any new information or clarifications will be added to the documentation page, so we recommend bookmarking it for the latest guidance. What Will the Change Look Like? For most customers: No disruption. Certificate issuance and renewals will continue as expected for eligible site configurations. For impacted scenarios: Certificate requests will fail (no certificate issued) starting July 28, 2025, if your site configuration is not supported. Existing certificates will remain valid until their expiration (up to six months after last renewal). Impacted Scenarios You will be affected by this change if any of the following apply to your site configurations: Your site is not publicly accessible: Public accessibility to your app is required. If your app is only accessible privately (e.g., requiring a client certificate for access, disabling public network access, using private endpoints or IP restrictions), you will not be able to create or renew a managed certificate. Other site configurations or setup methods not explicitly listed here that restrict public access, such as firewalls, authentication gateways, or any custom access policies, can also impact eligibility for managed certificate issuance or renewal. Action: Ensure your app is accessible from the public internet. However, if you need to limit access to your app, then you must acquire your own SSL certificate and add it to your site. Your site uses Azure Traffic Manager "nested" or "external" endpoints: Only “Azure Endpoints” on Traffic Manager will be supported for certificate creation and renewal. “Nested endpoints” and “External endpoints” will not be supported. Action: Transition to using "Azure Endpoints". However, if you cannot, then you must obtain a different SSL certificate for your domain and add it to your site. Your site relies on *.trafficmanager.net domain: Certificates for *.trafficmanager.net domains will not be supported for creation or renewal. Action: Add a custom domain to your app and point the custom domain to your *.trafficmanager.net domain. After that, secure the custom domain with a new SSL certificate. If none of the above applies, no further action is required. How to Identify Impacted Resources? To assist with the upcoming changes, you can use Azure Resource Graph (ARG) queries to help identify resources that may be affected under each scenario. Please note that these queries are provided as a starting point and may not capture every configuration. Review your environment for any unique setups or custom configurations. Scenario 1: Sites Not Publicly Accessible This ARG query retrieves a list of sites that either have the public network access property disabled or are configured to use client certificates. It then filters for sites that are using App Service Managed Certificates (ASMC) for their custom hostname SSL bindings. These certificates are the ones that could be affected by the upcoming changes. However, please note that this query does not provide complete coverage, as there may be additional configurations impacting public access to your app that are not included here. Ultimately, this query serves as a helpful guide for users, but a thorough review of your environment is recommended. You can copy this query, paste it into Azure Resource Graph Explorer, and then click "Run query" to view the results for your environment. // ARG Query: Identify App Service sites that commonly restrict public access and use ASMC for custom hostname SSL bindings resources | where type == "microsoft.web/sites" // Extract relevant properties for public access and client certificate settings | extend publicNetworkAccess = tolower(tostring(properties.publicNetworkAccess)), clientCertEnabled = tolower(tostring(properties.clientCertEnabled)) // Filter for sites that either have public network access disabled // or have client certificates enabled (both can restrict public access) | where publicNetworkAccess == "disabled" or clientCertEnabled != "false" // Expand the list of SSL bindings for each site | mv-expand hostNameSslState = properties.hostNameSslStates | extend hostName = tostring(hostNameSslState.name), thumbprint = tostring(hostNameSslState.thumbprint) // Only consider custom domains (exclude default *.azurewebsites.net) and sites with an SSL certificate bound | where tolower(hostName) !endswith "azurewebsites.net" and isnotempty(thumbprint) // Select key site properties for output | project siteName = name, siteId = id, siteResourceGroup = resourceGroup, thumbprint, publicNetworkAccess, clientCertEnabled // Join with certificates to find only those using App Service Managed Certificates (ASMC) // ASMCs are identified by the presence of the "canonicalName" property | join kind=inner ( resources | where type == "microsoft.web/certificates" | extend certThumbprint = tostring(properties.thumbprint), canonicalName = tostring(properties.canonicalName) // Only ASMC uses the "canonicalName" property | where isnotempty(canonicalName) | project certName = name, certId = id, certResourceGroup = tostring(properties.resourceGroup), certExpiration = properties.expirationDate, certThumbprint, canonicalName ) on $left.thumbprint == $right.certThumbprint // Final output: sites with restricted public access and using ASMC for custom hostname SSL bindings | project siteName, siteId, siteResourceGroup, publicNetworkAccess, clientCertEnabled, thumbprint, certName, certId, certResourceGroup, certExpiration, canonicalName Scenario 2: Traffic Manager Endpoint Types For this scenario, please manually review your Traffic Manager profile configurations to ensure only “Azure Endpoints” are in use. We recommend inspecting your Traffic Manager profiles directly in the Azure portal or using relevant APIs to confirm your setup and ensure compliance with the new requirements. Scenario 3: Certificates Issued to *.trafficmanager.net Domains This ARG query helps you identify App Service Managed Certificates (ASMC) that were issued to *.trafficmanager.net domains. In addition, it also checks whether any web apps are currently using those certificates for custom domain SSL bindings. You can copy this query, paste it into Azure Resource Graph Explorer, and then click "Run query" to view the results for your environment. // ARG Query: Identify App Service Managed Certificates (ASMC) issued to *.trafficmanager.net domains // Also checks if any web apps are currently using those certificates for custom domain SSL bindings resources | where type == "microsoft.web/certificates" // Extract the certificate thumbprint and canonicalName (ASMCs have a canonicalName property) | extend certThumbprint = tostring(properties.thumbprint), canonicalName = tostring(properties.canonicalName) // Only ASMC uses the "canonicalName" property // Filter for certificates issued to *.trafficmanager.net domains | where canonicalName endswith "trafficmanager.net" // Select key certificate properties for output | project certName = name, certId = id, certResourceGroup = tostring(properties.resourceGroup), certExpiration = properties.expirationDate, certThumbprint, canonicalName // Join with web apps to see if any are using these certificates for SSL bindings | join kind=leftouter ( resources | where type == "microsoft.web/sites" // Expand the list of SSL bindings for each site | mv-expand hostNameSslState = properties.hostNameSslStates | extend hostName = tostring(hostNameSslState.name), thumbprint = tostring(hostNameSslState.thumbprint) // Only consider bindings for *.trafficmanager.net custom domains with a certificate bound | where tolower(hostName) endswith "trafficmanager.net" and isnotempty(thumbprint) // Select key site properties for output | project siteName = name, siteId = id, siteResourceGroup = resourceGroup, thumbprint ) on $left.certThumbprint == $right.thumbprint // Final output: ASMCs for *.trafficmanager.net domains and any web apps using them | project certName, certId, certResourceGroup, certExpiration, canonicalName, siteName, siteId, siteResourceGroup Ongoing Updates We will continue to update this post with any new queries or important changes as they become available. Be sure to check back for the latest information. Note on Comments We hope this information helps you navigate the upcoming changes. To keep this post clear and focused, comments are closed. If you have questions, need help, or want to share tips or alternative detection methods, please visit our official support channels or the Microsoft Q&A, where our team and the community can assist you.24KViews1like1CommentFollow-Up to ‘Important Changes to App Service Managed Certificates’: November 2025 Update
This post provides an update to the Tech Community article ‘Important Changes to App Service Managed Certificates: Is Your Certificate Affected?’ and covers the latest changes introduced since July 2025. With the November 2025 update, ASMC now remains supported even if the site is not publicly accessible, provided all other requirements are met. Details on requirements, exceptions, and validation steps are included below. Background Context to July 2025 Changes As of July 2025, all ASMC certificate issuance and renewals use HTTP token validation. Previously, public access was required because DigiCert needed to access the endpoint https://<hostname>/.well-known/pki-validation/fileauth.txt to verify the token before issuing the certificate. App Service automatically places this token during certificate creation and renewal. If DigiCert cannot access this endpoint, domain ownership validation fails, and the certificate cannot be issued. November 2025 Update Starting November 2025, App Service now allows DigiCert's requests to the https://<hostname>/.well-known/pki-validation/fileauth.txt endpoint, even if the site blocks public access. If there’s a request to create an App Service Managed Certificate (ASMC), App Service places the domain validation token at the validation endpoint. When DigiCert tries to reach the validation endpoint, App Service front ends present the token, and the request terminates at the front end layer. DigiCert's request does not reach the workers running the application. This behavior is now the default for ASMC issuance for initial certificate creation and renewals. Customers do not need to specifically allow DigiCert's IP addresses. Exceptions and Unsupported Scenarios This update addresses most scenarios that restrict public access, including App Service Authentication, disabling public access, IP restrictions, private endpoints, and client certificates. However, a public DNS record is still required. For example, sites using a private endpoint with a custom domain on a private DNS cannot validate domain ownership and obtain a certificate. Even with all validations now relying on HTTP token validation and DigiCert requests being allowed through, certain configurations are still not supported for ASMC: Sites configured as "Nested" or "External" endpoints behind Traffic Manager. Only "Azure" endpoints are supported. Certificates requested for domains ending in *.trafficmanager.net are not supported. Testing Customers can easily test whether their site’s configuration or set-up supports ASMC by attempting to create one for their site. If the initial request succeeds, renewals should also work, provided all requirements are met and the site is not listed in an unsupported scenario.5.8KViews1like0CommentsHost remote MCP servers on Azure Functions
Model Context Protocol (MCP) servers allow AI agents to access external tools, data, and systems, greatly extending the capability and power of agents. When you’re ready to expose your MCP servers externally, within your organization or to the world, it’s important that the servers are run in a secure, scalable, and reliable environment. Azure Functions provides such a robust platform for hosting your remote MCP servers, offering high scalability with the Flex Consumption plan, built‑in authentication feature for Microsoft Entra and OAuth, and a serverless billing model. The platform also offers two hosting options for added flexibility and convenience. The options allow for hosting of MCP servers built with Azure Functions MCP extension or the official MCP SDKs. Azure Functions MCP Extension (GA) The MCP extension allows you to build and host servers using Azure Functions programming model, i.e. using triggers and bindings. The MCP tool trigger allows you to focus on implementing tools you want to expose, instead of worrying about handling protocol and server logistics. The MCP extension launched as public preview back in April and is now generally available, with support for .NET, Java, JavaScript, Python, and Typescript. New features in the extension Support for streamable-http transport Support for the newer streamable-http transport is added to the extension. Unless your client specifically requires the older Server-Sent Events (SSE) transport, you should use the streamable-http. The two transports have different endpoints in the extension: Transport Endpoint Streamable HTTP /runtime/webhooks/mcp Server-Sent Events (SSE) /runtime/webhooks/mcp/sse Defining server information You can use the extensions.mcp section in host.json to define MCP server information. { "version": "2.0", "extensions": { "mcp": { "instructions": "Some test instructions on how to use the server", "serverName": "TestServer", "serverVersion": "2.0.0", "encryptClientState": true, "messageOptions": { "useAbsoluteUriForEndpoint": false }, "system": { "webhookAuthorizationLevel": "System" } } } } Built-in server authentication and authorization The built-in feature implements the requirements of the MCP authorization protocol, such as issuing 401 challenge and hosting the Protected Resource Metadata document. You can configure it to use identity providers like Microsoft Entra for server authentication. In addition to server authenticating, you can also leverage this feature to implement on-behalf-of (OBO) auth flows where the client invokes a tool that accesses some downstream services on-behalf-of the user. Learn more about the built-in authentication and authorization feature. Mavin Build Plugin for Java For Java applications, the Maven Build Plugin (version 1.40.0) parses and verifies MCP tool annotations during build time. This process automatically generates the correct MCP extension configuration, ensuring that the MCP tool defined by the user is properly set up. The build-time analysis is especially beneficial for Java apps, as it allows developers to utilize the MCP extension without concerns about increased cold start times. We'll continuously enhance the plugin’s capabilities. Upcoming improvements, such as property type inference, will reduce manual configuration and make it even easier to use the McpToolTrigger. Get started Checkout the quickstarts to get an MCP extension server deployed in minutes: C# (.NET) remote-mcp-functions-dotnet Python remote-mcp-functions-python TypeScript (Node.js) remote-mcp-functions-typescript Java remote-mcp-functions-java References Learn more about the MCP extension and tool trigger in official documentations. Self‑hosted MCP server (public preview) In addition to the MCP extension, Azure Functions also supports hosting MCP servers implemented with the official SDKs. This is a suitable option for teams that have existing SDK‑based servers or who favor the SDK experience over the Functions programming model. There is no need to modify your server code; you can lift and shift these MCP servers to Azure Functions— which is why they are termed self‑hosted. The hosting capability supports the following features: Stateless servers that use the streamable-http transport. If you need your server to be stateful, consider using the Functions MCP extension for now. Servers implemented with Python, TypeScript, C#, or Java MCP SDK. Built-in server authentication and authorization like the MCP extension Hosting requirement Self-hosted MCP servers are deployed to the Azure Functions platform as custom handlers. You can think of custom handlers as lightweight web servers that receive events from the Functions host. The only requirement for hosting the MCP server is a file called host.json. Add this file to your project root to tell Functions how to run the server. An example host.json for a Python server looks like: { "version": "2.0", "configurationProfile": "mcp-custom-handler", "customHandler": { "description": { "defaultExecutablePath": "python", "arguments": ["path to main python script, e.g. hello.py"] }, "port": "8000" } } Get started Check out quickstarts to get your self-hosted MCP server deployed in minutes: C# (.NET) mcp-sdk-functions-hosting-dotnet Python mcp-sdk-functions-hosting-python TypeScript (Node.js) mcp-sdk-functions-hosting-node Java Coming soon! References Read the official documentation of self-hosted MCP servers and learn about integrations with Azure services like Foundry and API Center. For .NET developers - check out the overview of self-hosted MCP servers from the recent .NET Conference! We’d love to hear from you! Let us know your thoughts about hosting remote MCP server on Azure Functions. Does either of the options meet your needs? What other MCP features are you looking for? Let us know what you’d like us to prioritize next!752Views3likes1CommentAzure Functions Ignite 2025 Update
Azure Functions is redefining event-driven applications and high-scale APIs in 2025, accelerating innovation for developers building the next generation of intelligent, resilient, and scalable workloads. This year, our focus has been on empowering AI and agentic scenarios: remote MCP server hosting, bulletproofing agents with Durable Functions, and first-class support for critical technologies like OpenTelemetry, .NET 10 and Aspire. With major advances in serverless Flex Consumption, enhanced performance, security, and deployment fundamentals across Elastic Premium and Flex, Azure Functions is the platform of choice for building modern, enterprise-grade solutions. Remote MCP Model Context Protocol (MCP) has taken the world by storm, offering an agent a mechanism to discover and work deeply with the capabilities and context of tools. When you want to expose MCP/tools to your enterprise or the world securely, we recommend you think deeply about building remote MCP servers that are designed to run securely at scale. Azure Functions is uniquely optimized to run your MCP servers at scale, offering serverless and highly scalable features of Flex Consumption plan, plus two flexible programming model options discussed below. All come together using the hardened Functions service plus new authentication modes for Entra and OAuth using Built-in authentication. Remote MCP Triggers and Bindings Extension GA Back in April, we shared a new extension that allows you to author MCP servers using functions with the MCP tool trigger. That MCP extension is now generally available, with support for C#(.NET), Java, JavaScript (Node.js), Python, and Typescript (Node.js). The MCP tool trigger allows you to focus on what matters most: the logic of the tool you want to expose to agents. Functions will take care of all the protocol and server logistics, with the ability to scale out to support as many sessions as you want to throw at it. [Function(nameof(GetSnippet))] public object GetSnippet( [McpToolTrigger(GetSnippetToolName, GetSnippetToolDescription)] ToolInvocationContext context, [BlobInput(BlobPath)] string snippetContent ) { return snippetContent; } New: Self-hosted MCP Server (Preview) If you’ve built servers with official MCP SDKs and want to run them as remote cloud‑scale servers without re‑writing any code, this public preview is for you. You can now self‑host your MCP server on Azure Functions—keep your existing Python, TypeScript, .NET, or Java code and get rapid 0 to N scaling, built-in server authentication and authorization, consumption-based billing, and more from the underlying Azure Functions service. This feature complements the Azure Functions MCP extension for building MCP servers using the Functions programming model (triggers & bindings). Pick the path that fits your scenario—build with the extension or standard MCP SDKs. Either way you benefit from the same scalable, secure, and serverless platform. Use the official MCP SDKs: # MCP.tool() async def get_alerts(state: str) -> str: """Get weather alerts for a US state. Args: state: Two-letter US state code (e.g. CA, NY) """ url = f"{NWS_API_BASE}/alerts/active/area/{state}" data = await make_nws_request(url) if not data or "features" not in data: return "Unable to fetch alerts or no alerts found." if not data["features"]: return "No active alerts for this state." alerts = [format_alert(feature) for feature in data["features"]] return "\n---\n".join(alerts) Use Azure Functions Flex Consumption Plan's serverless compute using Custom Handlers in host.json: { "version": "2.0", "configurationProfile": "mcp-custom-handler", "customHandler": { "description": { "defaultExecutablePath": "python", "arguments": ["weather.py"] }, "http": { "DefaultAuthorizationLevel": "anonymous" }, "port": "8000" } } Learn more about MCPTrigger and self-hosted MCP servers at https://aka.ms/remote-mcp Built-in MCP server authorization (Preview) The built-in authentication and authorization feature can now be used for MCP server authorization, using a new preview option. You can quickly define identity-based access control for your MCP servers with Microsoft Entra ID or other OpenID Connect providers. Learn more at https://aka.ms/functions-mcp-server-authorization. Better together with Foundry agents Microsoft Foundry is the starting point for building intelligent agents, and Azure Functions is the natural next step for extending those agents with remote MCP tools. Running your tools on Functions gives you clean separation of concerns, reuse across multiple agents, and strong security isolation. And with built-in authorization, Functions enables enterprise-ready authentication patterns, from calling downstream services with the agent’s identity to operating on behalf of end users with their delegated permissions. Build your first remote MCP server and connect it to your Foundry agent at https://aka.ms/foundry-functions-mcp-tutorial. Agents Microsoft Agent Framework 2.0 (Public Preview Refresh) We’re excited about the preview refresh 2.0 release of Microsoft Agent Framework that builds on battle hardened work from Semantic Kernel and AutoGen. Agent Framework is an outstanding solution for building multi-agent orchestrations that are both simple and powerful. Azure Functions is a strong fit to host Agent Framework with the service’s extreme scale, serverless billing, and enterprise grade features like VNET networking and built-in auth. Durable Task Extension for Microsoft Agent Framework (Preview) The durable task extension for Microsoft Agent Framework transforms how you build production-ready, resilient and scalable AI agents by bringing the proven durable execution (survives crashes and restarts) and distributed execution (runs across multiple instances) capabilities of Azure Durable Functions directly into the Microsoft Agent Framework. Combined with Azure Functions for hosting and event-driven execution, you can now deploy stateful, resilient AI agents that automatically handle session management, failure recovery, and scaling, freeing you to focus entirely on your agent logic. Key features of the durable task extension include: Serverless Hosting: Deploy agents on Azure Functions with auto-scaling from thousands of instances to zero, while retaining full control in a serverless architecture. Automatic Session Management: Agents maintain persistent sessions with full conversation context that survives process crashes, restarts, and distributed execution across instances Deterministic Multi-Agent Orchestrations: Coordinate specialized durable agents with predictable, repeatable, code-driven execution patterns Human-in-the-Loop with Serverless Cost Savings: Pause for human input without consuming compute resources or incurring costs Built-in Observability with Durable Task Scheduler: Deep visibility into agent operations and orchestrations through the Durable Task Scheduler UI dashboard Create a durable agent: endpoint = os.getenv("AZURE_OPENAI_ENDPOINT") deployment_name = os.getenv("AZURE_OPENAI_DEPLOYMENT_NAME", "gpt-4o-mini") # Create an AI agent following the standard Microsoft Agent Framework pattern agent = AzureOpenAIChatClient( endpoint=endpoint, deployment_name=deployment_name, credential=AzureCliCredential() ).create_agent( instructions="""You are a professional content writer who creates engaging, well-structured documents for any given topic. When given a topic, you will: 1. Research the topic using the web search tool 2. Generate an outline for the document 3. Write a compelling document with proper formatting 4. Include relevant examples and citations""", name="DocumentPublisher", tools=[ AIFunctionFactory.Create(search_web), AIFunctionFactory.Create(generate_outline) ] ) # Configure the function app to host the agent with durable session management app = AgentFunctionApp(agents=[agent]) app.run() Durable Task Scheduler dashboard for agent and agent workflow observability and debugging For more information on the durable task extension for Agent Framework, see the announcement: https://aka.ms/durable-extension-for-af-blog. Flex Consumption Updates As you know, Flex Consumption means serverless without compromise. It combines elastic scale and pay‑for‑what‑you‑use pricing with the controls you expect: per‑instance concurrency, longer executions, VNet/private networking, and Always Ready instances to minimize cold starts. Since launching GA at Ignite 2024 last year, Flex Consumption has had tremendous growth with over 1.5 billion function executions per day and nearly 40 thousand apps. Here’s what’s new for Ignite 2025: 512 MB instance size (GA). Right‑size lighter workloads, scale farther within default quota. Availability Zones (GA). Distribute instances across zones. Rolling updates (Public Preview). Unlock zero-downtime deployments of code or config by setting a single configuration. See below for more information. Even more improvements including: new diagnostic settingsto route logs/metrics, use Key Vault App Config references, new regions, and Custom Handler support. To get started, review Flex Consumption samples, or dive into the documentation to see how Flex can support your workloads. Migrating to Azure Functions Flex Consumption Migrating to Flex Consumption is simple with our step-by-step guides and agentic tools. Move your Azure Functions apps or AWS Lambda workloads, update your code and configuration, and take advantage of new automation tools. With Linux Consumption retiring, now is the time to switch. For more information, see: Migrate Consumption plan apps to the Flex Consumption plan Migrate AWS Lambda workloads to Azure Functions Durable Functions Durable Functions introduces powerful new features to help you build resilient, production-ready workflows: Distributed Tracing: lets you track requests across components and systems, giving you deep visibility into orchestration and activities with support for App Insights and OpenTelemetry. Extended Sessions support in .NET isolated: improves performance by caching orchestrations in memory, ideal for fast sequential activities and large fan-out/fan-in patterns. Orchestration versioning (public preview): enables zero-downtime deployments and backward compatibility, so you can safely roll out changes without disrupting in-flight workflows Durable Task Scheduler Updates Durable Task Scheduler Dedicated SKU (GA): Now generally available, the Dedicated SKU offers advanced orchestration for complex workflows and intelligent apps. It provides predictable pricing for steady workloads, automatic checkpointing, state protection, and advanced monitoring for resilient, reliable execution. Durable Task Scheduler Consumption SKU (Public Preview): The new Consumption SKU brings serverless, pay-as-you-go orchestration to dynamic and variable workloads. It delivers the same orchestration capabilities with flexible billing, making it easy to scale intelligent applications as needed. For more information see: https://aka.ms/dts-ga-blog OpenTelemetry support in GA Azure Functions OpenTelemetry is now generally available, bringing unified, production-ready observability to serverless applications. Developers can now export logs, traces, and metrics using open standards—enabling consistent monitoring and troubleshooting across every workload. Key capabilities include: Unified observability: Standardize logs, traces, and metrics across all your serverless workloads for consistent monitoring and troubleshooting. Vendor-neutral telemetry: Integrate seamlessly with Azure Monitor or any OpenTelemetry-compliant backend, ensuring flexibility and choice. Broad language support: Works with .NET (isolated), Java, JavaScript, Python, PowerShell, and TypeScript. Start using OpenTelemetry in Azure Functions today to unlock standards-based observability for your apps. For step-by-step guidance on enabling OpenTelemetry and configuring exporters for your preferred backend, see the documentation. Deployment with Rolling Updates (Preview) Achieving zero-downtime deployments has never been easier. The Flex Consumption plan now offers rolling updates as a site update strategy. Set a single property, and all future code deployments and configuration changes will be released with zero-downtime. Instead of restarting all instances at once, the platform now drains existing instances in batches while scaling out the latest version to match real-time demand. This ensures uninterrupted in-flight executions and resilient throughput across your HTTP, non-HTTP, and Durable workloads – even during intensive scale-out scenarios. Rolling updates are now in public preview. Learn more at https://aka.ms/functions/rolling-updates. Secure Identity and Networking Everywhere By Design Security and trust are paramount. Azure Functions incorporates proven best practices by design, with full support for managed identity—eliminating secrets and simplifying secure authentication and authorization. Flex Consumption and other plans offer enterprise-grade networking features like VNETs, private endpoints, and NAT gateways for deep protection. The Azure Portal streamlines secure function creation, and updated scenarios and samples showcase these identity and networking capabilities in action. Built-in authentication (discussed above) enables inbound client traffic to use identity as well. Check out our updated Functions Scenarios page with quickstarts or our secure samples gallery to see these identity and networking best practices in action. .NET 10 Azure Functions now supports .NET 10, bringing in a great suite of new features and performance benefits for your code. .NET 10 is supported on the isolated worker model, and it’s available for all plan types except Linux Consumption. As a reminder, support ends for the legacy in-process model on November 10, 2026, and the in-process model is not being updated with .NET 10. To stay supported and take advantage of the latest features, migrate to the isolated worker model. Aspire Aspire is an opinionated stack that simplifies development of distributed applications in the cloud. The Azure Functions integration for Aspire enables you to develop, debug, and orchestrate an Azure Functions .NET project as part of an Aspire solution. Aspire publish directly deploys to your functions to Azure Functions on Azure Container Apps. Aspire 13 includes an updated preview version of the Functions integration that acts as a release candidate with go-live support. The package will be moved to GA quality with Aspire 13.1. Java 25, Node.js 24 Azure Functions now supports Java 25 and Node.js 24 in preview. You can now develop functions using these versions locally and deploy them to Azure Functions plans. Learn how to upgrade your apps to these versions here In Summary Ready to build what’s next? Update your Azure Functions Core Tools today and explore the latest samples and quickstarts to unlock new capabilities for your scenarios. The guided quickstarts run and deploy in under 5 minutes, and incorporate best practices—from architecture to security to deployment. We’ve made it easier than ever to scaffold, deploy, and scale real-world solutions with confidence. The future of intelligent, scalable, and secure applications starts now—jump in and see what you can create!2.2KViews0likes0CommentsAnnouncing Advanced Kubernetes Troubleshooting Agent Capabilities (preview) in Azure Copilot
What’s new? Today, we're announcing Kubernetes troubleshooting agent capabilities in Azure Copilot, offering an intuitive, guided agentic experience that helps users detect, triage, and resolve common Kubernetes issues in their AKS clusters. The agent can provide root cause analysis for Kubernetes clusters and resources and is triggered by Kubernetes-specific keywords. It can detect problems like resource failures and scaling bottlenecks and intelligently correlates signals across metrics and events using `kubectl` commands when reasoning and provides actionable solutions. By simplifying complex diagnostics and offering clear next steps, the agent empowers users to troubleshoot independently. How it works With Kubernetes troubleshooting agent, Azure Copilot automatically investigates issues in your cluster by running targeted `kubectl` commands and analyzing your cluster’s configuration and current state. For instance, it identifies failing or pending pods, cluster events, resource utilization metrics, and configuration details to build a complete picture of what’s causing the issue. Azure Copilot then determines the most effective mitigation steps for your specific environment. It provides clear, step-by-step guidance, and in many cases, offers a one-click fix to resolve the issue automatically. If Azure Copilot can’t fully resolve the problem, it can generate a pre-populated support request with all the diagnostic details Microsoft Support needs. You’ll be able to review and confirm everything before the request is submitted. This agent is available via Azure Copilot in the Azure Portal. Learn more about how Azure Copilot works. How to Get Started To start using agents, your global administrator must request access to the agents preview at the tenant level in the Azure Copilot admin center. This confirms your interest in the preview and allows us to enable access. Once approved, users will see the Agent mode toggle in Azure Copilot chat and can then start using Copilot agents. Capacity is limited, so sign up early for the best chance to participate. Additionally, if you are interested in helping shape the future of agentic cloud ops and the role Copilot will play in it, please join our customer feedback program by filling up this form. Agents (preview) in Azure Copilot | Microsoft Learn Troubleshooting sample prompts From an AKS cluster resource, click Kubernetes troubleshooting with Copilot to automatically open Azure Copilot in context of the resource you want to troubleshoot: Try These Prompts to Get Started: Here are a few examples of the kinds of prompts you can use. If you're not already working in the context of a resource, you may need to provide the specific resource that you want to troubleshoot. "My pod keeps restarting can you help me figure out why" "Pods are stuck pending what is blocking them from being scheduled" "I am getting ImagePullBackOff how do I fix this" "One of my nodes is NotReady what is causing it" "My service cannot reach the backend pod what should I check" Note: When using these kinds of prompts, be sure agent mode is enabled by selecting the icon in the chat window: Learn More Troubleshooting agent capabilities in Agents (preview) in Azure Copilot | Microsoft Learn Announcing the CLI Agent for AKS: Agentic AI-powered operations and diagnostics at your fingertips - AKS Engineering Blog Microsoft Copilot in Azure Series - Kubectl | Microsoft Community Hub441Views3likes0CommentsAgentic Power for AKS: Introducing the Agentic CLI in Public Preview
We are excited to announce the agentic CLI for AKS, available now in public preview directly through the Azure CLI. A huge thank you to all our private preview customers who took the time to try out our beta releases and provide feedback to our team. The agentic CLI is now available for everyone to try--continue reading to learn how you can get started. Why we built the agentic CLI for AKS The way we build software is changing with the democratization of coding agents. We believe the same should happen for how users manage their Kubernetes environments. With this feature, we want to simplify the management and troubleshooting of AKS clusters, while reducing the barrier to entry for startups and developers by bridging the knowledge gap. The agentic CLI for AKS is designed to simplify this experience by bringing agentic capabilities to your cluster operations and observability, translating natural language into actionable guidance and analysis. Whether you need to right-size your infrastructure, troubleshoot complex networking issues like DNS or outbound connectivity, or ensure smooth K8s upgrades, the agentic CLI helps you make informed decisions quickly and confidently. Our goal: streamline cluster operations and empower teams to ask questions like “Why is my pod restarting?” or “How can I optimize my cluster for cost?” and get instant, actionable answers. The agentic CLI for AKS is built on the open-source HolmesGPT project, which has recently been accepted as a CNCF Sandbox project. With a pluggable LLM endpoint structure and open-source backing, the agentic CLI is purpose-built for customizability and data privacy. From private to public preview: what's new? Earlier this year, we launched the agentic CLI in private beta for a small group of AKS customers. Their feedback has shaped what's new in our public preview release, which we are excited to share with the broader AKS community. Let’s dig in: Simplified setup: One-time initialization for LLM parameters with ‘az aks agent-init'. Configure your LLM parameters such as API key and model through a simple, guided user interface. AKS MCP integration: Enable the agent to install and run the AKS MCP server locally (directly in your CLI client) for advanced context-aware operations. The AKS MCP server includes tools for AKS clusters and associated Azure resources. Try it out: az aks agent “list all my unhealthy nodepools” --aks-mcp -n <cluster-name> -g <resource-group> Deeper investigations: New "Task List" feature which helps the agent plan and execute on complex investigations. Checklist-style tracker that allows you to stay updated on the agent's progress and planned tool calls. Provide in-line feedback: Share insights directly from the CLI about the agent's performance using /feedback. Provide a rating of the agent's analysis and optional written feedback directly to the agentic CLI team. Your feedback is highly appreciated and will help us improve the agentic CLI's capabilities. Performance and security improvements: Minor improvements for faster load times and reduced latency, as well as hardened initialization and token handling. Getting Started Install the extension az extension add --name aks-agent Set up you LLM endpoint az aks agent-init Start asking questions Some recommended scenarios to try out: Troubleshoot cluster health: az aks agent "Give me an overview of my cluster's health" Right-size your cluster: az aks agent "How can I optimize my node pool for cost?" Try out the AKS MCP integration: az aks agent "Show me CPU and memory usage trends" --aks-mcp -n <cluster-name> -g <resource-group> Get upgrade guidance: az aks agent "What should I check before upgrading my AKS cluster?" Update the agentic CLI extension az extension update --name aks-agent Join the Conversation We’d love your feedback! Use the built-in '/feedback' command or visit our GitHub repository to share ideas and issues. Learn more: https://aka.ms/aks/agentic-cli Share feedback: https://aka.ms/aks/agentic-cli/issues821Views1like0Comments