Microsoft has scored a big win, snagging Charlie Bell just two week after he left rival AWS.

Charlie Bell was a heavyweight inside Amazon’s cloud business, a 23-year veteran of the company. When Jeff Bezos stepped down as CEO, and AWS head Andy Jassy succeeded him, many saw Bell as the most likely candidate to take over as AWS CEO.

Instead, Bell left the company he had spent more than two decades with, sparking a major reshuffling to help fill the gap.

CNBC has now confirmed that Microsoft has hired Bell, although he’s currently listed as reporting to Kathleen Hogan, Microsoft’s head of HR and an executive vice president. It’s a somewhat odd placement for Bell, given his background, and is likely temporary.

However things shake out, Bell joining Microsoft is a big blow to AWS, especially since Microsoft is Azure is the AWS’ closest cloud competitor.