Configuring your Git username is essential for proper commit authorship, collaboration tracking, and maintaining accurate project history across all your repositories. As the creator of CoreUI, a widely used open-source UI library, I’ve helped thousands of developers configure their Git identity for contributing to our repositories, maintaining proper attribution in enterprise projects, and ensuring consistent authorship across development teams. From my expertise, the most effective approach is to set a global username with repository-specific overrides when needed. This method provides consistent identity across projects while allowing flexibility for different contexts like work and personal repositories or multiple developer personas.