Explore the transformative impact of AI on software development through this 20-minute conference talk from the AI Engineer Summit 2023. Learn about the fundamental shifts in software building practices from the open source era to the present, tracing the evolution from pull requests to code deployment. Discover the comprehensive history behind GitHub Copilot's development and gain insights into how artificial intelligence is completely redefining the developer experience. Understand GitHub's AI strategy and productivity initiatives from the perspective of a VP of Product Management who oversees repositories, pull requests, issues, projects, mobile development, and AI integration. Gain valuable perspectives on the future of software development as AI continues to reshape how developers work, collaborate, and build applications.