Context: In our Product we provide extensibility for Microsoft services to enhance user experience by creating calendar invites for meetings. To achieve this goal we are using Microsoft Graph API A...
bagervin
Microsoft
MicrosoftInteresting Idea. Are you familiar with Multi-Tenant Applications where you would register a single application in your tenant, and then customers can register for use in their tenant? Single and multi-tenant apps in Azure AD - Microsoft identity platform | Microsoft Docs
This would cover most of your needs, but not have application specific parameters such as the mailbox to use to create calendar events on behalf of. If you are hosting your application on Azure, you can also publish an ARM template (and put in the Azure Marketplace) to capture additional parameters and support deep extensibility.
Azure Marketplace - Prerequisites for ARM Template Development | Azure Docs
Barry Gervin