**Git and GitHub**: **Git** is a distributed version control system used for tracking changes in source code during software development. It allows multiple developers to collaborate on a project while keeping a history of all changes made to the codebase. **GitHub** is a web-based platform that provides hosting for Git repositories. It adds a user-friendly interface to Git and offers features for collaboration, code review, issue tracking, and more. **Why We Need Git:** Git is essential because it provides a systematic way to track changes in code, making it easier to collaborate with others, manage different versions of a project, and recover from errors or mistakes. It promotes efficient teamwork and code organization.