Code reviews are great in the Software Engineering world, it is a great way to maintain consistency and quality of codebase based on some standards defined by the team, company or industry with some great free benefits like Knowledge Sharing. Code reviews have evolved in the past few decades. It started mainly from human review and now machines help humans in many ways. Human reviewers act as a gatekeeper for the code alongside automated static analysis tools that help both author and reviewer to save a lot of time. This way the focus remains on core things like code correctness and comprehension which you will see in the next section.