Continuous integration automatically builds and tests code changes as they are added to a shared codebase.
Changes meet automation early
CI asks developers to merge small changes into a shared branch frequently. A build and test sequence then exposes integration problems while they are still close to the code that caused them.
Fast feedback is the feature
Useful CI jobs are repeatable, observable, and quick enough to run often. Tests that are flaky or ignored turn a safety net into noise.