There’s some more corporate reshuffling going on in the Windows Phone universe this week, now that Brandon Watson has confirmed his departure from Microsoft. Watson, who served as head of the WP Developer Experience, announced the news on his Twitter page Friday, and later told ZDNet that he’s heading to Amazon, where he’ll be Director of the Kindle Cross Platform team. In an e-mail to ZDNet‘s Mary Jo Foley, Watson acknowledged the difficulty of the decision, but ultimately decided that “the opportunity placed in front of me that was too big to pass up.” At Amazon, the exec will be charged with laying out a roadmap for Kindle app development across first- and third-party platforms, including, of course, Windows Phone and Windows 8. Microsoft has yet to announce a replacement, issuing the following statement: “We can confirm February 6th is Brandon Watson’s last day at Microsoft. Brandon did a great job helping us build a vibrant developer community and we wish him well with his next adventure.”