Google App Engine

Question

What is the difference between google apps and google app engine?

Answer 1

Google Apps is a Web-based hosted software-as-a-service (SaaS) solution (gmail / docs / talk / site / calendar on your own domain).

Google App Engine is a platform-as-a-service (PaaS) solution. It is something like EC2, but with only specific (Python, Java, PHP and Go) runtime environments available.