I looked for this online and to my suprise I didn't find any relevant information.
We recently had a serious crash because one of Azure services had some breaking changes. This information was published on the service website and also I think shown as warning on Azure portal. The problem is that nobody checks the website if it's not needed and warnings can be overlooked.
I wonder if there is a mailing list or some other way to get emails only in case where there are some planned changes with serious impact on the services?
Regards
