Since our initial launch of Copilot code review (CCR) last April, usage has grown 10X, now accounting for more than one in five code reviews on GitHub. Behind the scenes, we’ve been running continuous experiments to enhance comment quality. We also moved to an agentic architecture that retrieves repository context and reasons across changes. At every step of the way, we’ve listened to your feedback: your survey answers and even your simple thumbs-up and thumbs-down reactions on comments have helped us identify key issues and iterate on our UX to provide a comprehensive review experience. Copilot code review handles pull request reviews and summaries, allowing teams to focus on more complex tasks. Suvarna Rane, Software Development Manager, General Motors ## Redefining a “good” code review As Copilot code review evolved over time, so has our definition of a “good code review.” When we started building it in 2024, our goal was simple thoroughness.…