Microsoft has become more open in recent years by open sourcing many products, making products cross-platform, and making training materials openly available. This open approach makes business sense for Microsoft as it attracts developers, allows employees flexibility, and taps into outside skills. Examples of Microsoft's success with open source include the Edge browser, Visual Studio Code editor, TypeScript transpiler, and ChakraCore JavaScript engine. The presenter encourages attendees to help promote Microsoft's open products and projects through conference talks, writing, and contributing translations and code.