The technique behind standard and flex is large enough that we simply cannot provide consistent experience between these two. In fact these two products are sup

The technique behind standard and flex is large enough that we simply cannot provide consistent experience between these two. In fact these two products are supported by different teams. While the inconsistency is unfortunate, we are fully aware of this issue and are working towards a solution. Please expect some announcements from us. Service deprecation is not taken lightly, and we guarantee 12 months per GCP deprecation policy (https://cloud.google.com/terms/deprecation https://cloud.google.com/terms/deprecation). Of the services you mentioned, I don't think mail API is officially deprecated (per https://cloud.google.com/appengine/docs/deprecations/ https://cloud.google.com/appengine/docs/deprecations/), and Datastore Backups is superseded by Managed Export (https://cloud.google.com/datastore/docs/export-import-entities https://cloud.google.com/datastore/docs/export-import-entiti...). Not sure about the memory problems you mentioned though. Disclaimer: I'm on App Engine SRE team.