As the dust begins to settle from Microsoft's most recent reorg, some senior managers are moving about inside the company, as typically happens each year around this time.

One of those on the move is 26-year Microsoft veteran David Treadwell, who most recently has been the Corporate Vice President in charge of Windows Engineering program management. Treadwell is leaving Windows to take on a new, not-yet-publicly disclosed role in Microsoft's Cloud & Enterprise group. His replacement will be Harv Bhela, another Microsoft veteran who has spent most of his career working on Exchange.

Treadwell notified the Operating Systems Group and others of his planned new role in a July 16 internal email entitled "Change."

Some excerpts from that mail:

"So when Satya asked me to take a new role, my first thought was 'I love working on Windows! I don't want to work on anything different!' Windows is at the center of Microsoft, the core of the company and our success and the broader computing ecosystem, and we are on the precipice of a pretty amazing period as we get ready to upgrade the world with Windows 10. The strategy is right. The execution is strong.... "Yet when the CEO calls, well, you take that call. I'm excited about what I'll be doing next in C&E (Cloud and Enterprise), and I'm especially excited that I'll be able to keep a strong connection to Windows from the cloud side."

Treadwell joined Microsoft in 1989 and started his career at the company working on Windows NT networking. In 2011, he took a role in Microsoft's Interactive Entertainment Division's software and services group.

Bhela, his replacement in Windows, joined Microsoft in 1997, when Microsoft bought his previous employer, Interse. Bhela, who most recently was the Corporate Vice President of Outlook, Outlook.com and Exchange Program Management, has been in the Exchange group since at least 2004. He worked on Bing Maps for four years before that, and from 1998 to 2000, was development manager of the Universal Runtime in COM+ 2.0.

I asked Microsoft for more information about Treadwell's new role, but have not heard back.

Treadwell and Bhela aren't the only ones taking on new roles. Jeff Teper, who most recently served as head of Corporate Strategy is coming back to run the unified OneDrive and SharePoint teams, as Teper himself tweeted late last week.

Phil Smoot, who was named as the replacement for Chris Jones, the most recent head of the combined OneDrive and SharePoint engineering organization, will report to Teper, a Microsoft spokesperson confirmed.

In March, Microsoft officials said Jones would return to Microsoft after taking time off this summer, in an as-yet-unannounced role in the Applications and Services Group.