Microsoft’s stance on open source has shifted dramatically. Not only is Microsoft releasing an ever-growing stable of open source projects (including the DLR, MEF, and MVC), they’re even contributing back to the Linux kernel. Has the open source movement has moved beyond controversy? In this BOF, we’ll find out. What are the new battles? Who won the old ones? We will discuss: ? How you use (or when you avoid) open source in your work, and why. ? When to have an open source strategy. ? Where do we take open source from here?