Google Cloud

• App Engine Standard: limited runtimes (Python, Java, PHP, Go), very simple to get up and running, auto-scaled etc. Focused APIs designed specifically for App Engine.

• App Engine Flexible : anything you can put in a container, auto-scaled etc.

• Container Engine: you design your application in terms of micro-services, specify how they're scaled etc, but let Container Engine (the Google Cloud Platform implementation of Kubernetes) perform the scaling

• Compute Engine: Hosted VMs with benefits, basically. Some features such as live migration, auto scaling within Managed Instance Groups, but it's much more "bare metal" than the above.