PAAS Software Update, Breaking change.

Question

Hi,

We know that in case of PAAS, software update is the responsibility of the Cloud provider.
Suppose, I create an Azure Function. How does Microsoft makes sure that the Azure function is still running as per its intended functionality after the Software update of the server or any other update of the server?

Regards,
Eklavya Gupta

Answer 1

Hello Eklavya,

Generally speaking, if a breaking change is bound to the chosen technical stack that powers your Functions App, I believe your Azure sub is auto-detected by us and you will then be getting notification emails ahead of time. You'll also want to leverage the open-source nature of Azure Functions and get subscribed to the multiple announcement sources below:

• Azure Updates, an example from Node 10 deprecation: https://azure.microsoft.com/en-us/updates/azure-functions-support-for-node-10-is-ending-on-30-september-2022/
• Functions Announcements: https://github.com/Azure/app-service-announcements/issues
• Azure App Service Team Blog: https://azure.github.io/AppService/

Assuming that you are getting notifications from Azure as well as subscribed to the announcements sources that are publicly available above, Azure Functions as a PAAS guarantees 99.95% uptime (SLA for Azure Functions) for running your functions in their intended functionality.