Google App Engine – standard

Google App Engine (Standard) is the way to go for building and deploying data-rich and heavy load applications in a secure and reliable fully managed environment.

Hosted web apps with App Engine Standard

We've already introduced App Engine Standard previously—it is a PaaS compute offering in which we can deploy code in a few specific runtimes (Java 8, Python 2.7, Go, and PHP at the time of writing), into Google-proprietary containers. The advantage of App Engine Standard is that you just write the code—you don't bother with ops, containerization, or anything else.

If you are developing GCP first and are quite confident that your app is going to be GCP-only, then...