ActiveSync is the software that comes with your Windows Mobile device that is used to communicate between your desktop/laptop computer and the device. However, with the introduction of Windows Vista, ActiveSync was replaced by Windows Mobile Device Center.
Lately there has been quite a bit of news about the future (End of 2009?) Windows 7 release which will replace Vista. (It’s been getting a lot of good press with regards to interface changes and performance improvements)
With Windows 7, it sounds like Windows Mobile Device Center will be replaced by something called Device Stage. (Which is MUCH more than just for syncing your Windows Mobile Device)
Click HERE to find out more information from WMExperts.