In this interview, Gergely Orosz talks with Scott Guthrie about the evolution of Microsoft's developer tools over five decades, starting from Microsoft BASIC to the creation of Visual Basic, C#, ASP.NET, Visual Studio, and the shift to open source with VS Code. Guthrie shares insights into the strategic decisions behind these tools, the impact of .NET, the cultural shift towards open source, and the future of developer tools with AI agents. He emphasizes the importance of developer productivity, embracing new technologies, and the role of cloud platforms like Azure in enabling innovation. The conversation also touches on lessons learned from Windows Phone and the strategic shift in Azure to focus on hybrid cloud solutions for businesses.