In today’s world, security is paramount. Microsoft is committed to ensuring your Azure Stack environment stays both secure and functional – as it delivers consistency to build and deploy applications using the same approach, APIs, DevOps tools, and portal, as you use for Azure.
Azure Stack operators must be able to safely and reliably update their Azure Stack infrastructure, while at the same time, provide highly-available, mission-critical services to their customers. Updates can range in scope from software to firmware, across core components of the system. The update process must be easy and predictable, allowing customers to focus on other aspects of their business.
Read about it in the Azure blog.