After 150,000 developers joined the waitlist, App EngineGoogle Cloud's managed platform for deploying web apps without provisioning servers manually. became publicly available with pricing tiers and new APIs — PythonA high-level language known for readability — dominant in data science, scripting, and web backends. apps could scale on Google's infrastructure without provisioning servers. It validated PaaS as a category alongside HerokuA platform-as-a-service for deploying web applications — popular for Ruby, Node, and early cloud apps. and set expectations for cloud-native deployment.

Opening App EngineGoogle Cloud's managed platform for deploying web apps without provisioning servers manually. proved managed cloud hosting had mass developer demand.

It moved PaaS from invite-only experiment to a product any developer could try.