A guide to trunk-based development

Trunk-based development is a software development approach that emphasizes frequent integration of code changes into a shared main branch, known as the trunk or mainline, facilitating continuous delivery and agile practices. Originating alongside early version control systems and gaining prominence with distributed systems like Git, it promotes continuous integration, reducing complexity and enabling faster time to market by minimizing the risks associated with prolonged feature branches. This approach enhances team collaboration, maintains a more manageable codebase, and supports DevOps practices, encouraging small, self-contained code changes and frequent testing to ensure high code quality and stability. Companies like Google, Spotify, Facebook, and Atlassian have adopted this method to maintain innovation and quick response to user feedback, despite challenges such as managing code conflicts, ensuring test coverage, and handling feature toggles. Essential tools supporting trunk-based development include Git for version control, Jenkins for automation, GitHub for code reviews, and feature management platforms like LaunchDarkly. The approach aligns with modern development practices, making it easier for teams to collaborate and rapidly deliver high-quality software.