Ugh, now you're making me explain myself due to your poor understanding of what I was saying and taking different comments in different threads out of context.
"We migrated"... meaning that over time, everyone is migrating from the concept of using GAE as a first choice, to using things like Run/Functions. Not that I actually physically took code for GAE and moved it to R/F. For example, my last project, I choose to use GCF, instead of GAE. The reason I went straight to GCF is because it is effectively what GAE has morphed into today. This isn't a slight on GAE at all. I've updated previous comment to hopefully clarify this for you.
Again, I have used GCP extensively since about 2009. By the way, much of what you use today was a result of things I did back when I co-founded the Jakarta Apache project, open sourced Tomcat from Sun, brought Lucene under the umbrella, blah blah blah... I've been around the internet since 1991.