Innovation Engines: Kakul Srivastava, GitHub

Kakul Srivastava is the vice president of product management at Github, the collaborative service used by over 12 million developers to share software code. We caught up with her recently to talk about how Github has evolved into a platform (and what it means to be a platform), how the company figures out which new features and products to build, and the role of open source software in stimulating innovation. Plus, we tell you what to think about what 2015 meant for Microsoft, virtual reality, and Silicon Valley "unicorns."