In this AWS re:Invent 2023 session, Doug Seven and Rory Richardson discuss best practices for Amazon CodeWhisperer, a generative AI-powered coding companion. They demonstrate how CodeWhisperer improves developer productivity by providing real-time code suggestions, explain its underlying foundation model, and showcase features like cross-file context, customizations, and security scanning. The presenters emphasize the importance of prompt engineering and highlight CodeWhisperer's ability to generate unit tests and assist with command-line interfaces. They also discuss the future implications of generative AI in software development, suggesting it could democratize coding and change the developer landscape.