Microsoft's head of healthcare thought it was a 'career-ending move' when Satya Nadella offered him the job. Here's why he says he's now completely sucked in.

Peter Lee, the corporate vice president of Microsoft Healthcare, thought at first that taking on the tech giant's healthcare strategy would be a "career-ending move." But over the past few years, he's come around to it and sees companies like Microsoft playing a big role in healthcare. "For me, it's fundamentally a question of what right do we have as a company like Microsoft to be participating in healthcare," Lee said.