I don't understand your conclusion (Azure is best?). App Engine is far and away the most battle-hardened PaaS, going from tons of tiny toy apps to the scale of

I don't understand your conclusion (Azure is best?). App Engine is far and away the most battle-hardened PaaS, going from tons of tiny toy apps to the scale of Snapchat. I don't disagree that having a PaaS and "marketplace" is important, but I don't see how you seem to conclude that GCP is less relevant here. Disclaimer: I work on Compute Engine.