Azure Function Apps

https://learn.microsoft.com/en-us/azure/azure-functions/functions-overview

Function apps vs Azure App Services
https://stackoverflow.com/questions/67546988/azure-app-service-plan-function-vs-app-service

An Azure function is triggered by an external event or a timer. It then executes the code of the function. When hosted on a consumption plan this execution is allowed to run for 5 or 10 minutes max. When you need a longer execution time you need to run it on an App Service Plan.