Below is the comparison for Google App Engine vs AWS
GAE supports Java, Python, Go, and PHP. It also supports other JVM languages such as Clojure and PHP via a special version of Quercus, JRuby, Groovy, and Scala by extension. GAE was developed by Google and was made available for public usage in 2008. Its stable release is 1.8.2 in July 2013. GAE is written in Python, Java, Go, and PHP. It provides automatic scaling and load balancing, persistent storage, full support for common web technologies, APIs for authenticating users and sending email using Google Accounts, full featured simulation of Google App Engine on your local development environment, scheduled tasks, and task queues.
|Load Balancing||Yes (Extra Charge)||Yes (Free)|
|Programming Language Supported||APLJavaPHP
|Free Tier||Free of cost for limited usage, and trial||Free Tier for 1 Year. User needs to provide Credit Card details|
|Flexibility||Less considering PaaS||More considering IaaS|