Git tags and branches are fundamental tools in version control that help developers manage different versions of a project efficiently. Tags serve as markers for significant milestones in the project's history, allowing easy reference and rollback to specific code states, while branches enable independent development lines for new features or bug fixes without impacting the main codebase. Both elements complement each other and are integral to continuous integration and delivery (CI/CD) pipelines, such as those offered by CircleCI, which can automate, orchestrate, and monitor development processes. CircleCI allows the use of tags as triggers for pipeline execution, offering insights into build performance and resource consumption, and enabling optimized delivery processes through branch and tag filters. Employing effective strategies for branching and tagging, especially within CI/CD environments, can enhance team velocity and streamline software delivery, making Git an indispensable tool for development teams.