Docker is the tool that made containers mainstream. It packages an application with everything it needs (code, runtime, libraries and settings) into one portable unit that runs the same way on a laptop, a test server or a production cluster. Docker first appeared in...
Containers changed how software is packaged. Platform-as-a-service (PaaS) changed how it is deployed. Put them together and you get platforms that let developers push code and have it built, deployed and scaled automatically in containers. In 2026 the choice is...
