The code writing process requires great mental effort and concentration, which makes it very difficult to achieve a flawless result. However, it’s important to remember there is no such thing as perfect code — programmers should strive to achieve "better" code that constantly can be improved. Reviewing the code author’s work can’t guarantee the prevention of all bugs, but it can protect users from experiencing it. That’s why integrating the code review into the development process helps to deliver high-quality applications that companies expect to get while outsourcing their software development.
Code review is a systematic examination of software source code used to detect mistakes, spot early bugs, track possible defects, and improve general code quality and consistency — this process helps code remain more maintainable. Conducted by fellow programmers and quality assurance specialists, code review aims to accelerate and streamline the software development process. The clean, well-designed, and easy-to-maintain codebase is the foundation for any high-quality, secure, and reliable application.