Google App Engine is the most flexible and no-ops part of hosting your application.
Google App Engine – flexible
Hosted Docker containers with App Engine Flex
Both VMs and containers require a fair amount of low-level intricacies and ops. What if you decided that you didn't want to deal with any of that? What if you would rather use a standard PaaS web development tool or technology such as Heroku or Engine Yard? Both of these are classic web development platforms that you could choose to leverage. Well, the GCP equivalent of doing this is making use of the Google App Engine:
Using App Engine, you could set up a pretty complex web app with very little effort, focusing on just writing the code. One little note...