In today's competitive landscape, companies are under pressure to accelerate their software development processes, particularly as AI enhances the speed of code writing, leaving the "outer loop" of testing and code review as a bottleneck. Engineering organizations face decisions about whether to build their own developer tools or adopt commercial solutions, with Graphite emerging as a popular choice for its AI-powered code review platform. While building in-house tools offers customization and control, it also involves significant hidden costs, scalability challenges, and resource diversion from core projects. Graphite addresses these issues by providing a suite of tools designed to streamline code reviews and merging processes, including AI-driven feedback, seamless PR stacking, automated merge queues, data insights for performance tracking, and simplified Git operations. The platform allows teams to focus on delivering value to customers rather than maintaining internal tools, demonstrating its potential to enhance productivity and efficiency in software development.