Code Review
In plain terms
Examining others' code changes before merging.
Going deeper
Code review has peers inspect proposed changes to catch bugs, improve quality, and share knowledge before they're merged. It's a quality and learning gate.
Under the hood
Usually via pull requests; effective reviews are timely, focused, and constructive.
Examples
Pull requests, peer review, quality gates, GitHub, knowledge sharing.
Think of it like...
Like an editor proofreading a chapter before it goes into the book.