Emailed a recruiter about The Foundry, one of Microsoft's summer internship programs. Received an email back asking to set up a phone interview that very day. The phone interview was nothing heavy, just general questions about my history as an undergraduate student, favorite project, etc. I was invited for an on-site, along with a group of maybe 10 others that morning. Very nice people. There was a generous breakfast for all of us. Met with 4 engineers for about an hour each. Three were technical. I had to do things like demonstrate websites that I thought had a nice UI, talk about the inner workings (hardware and software) of a mobile device (in a general sense), and some whiteboard coding. I was told immediately after the process ended that I was not chosen. They sat us in a room and called us out one by one to break the news. We weren't aware at the moment, but those that remained in the room were hired.