Here’s a really good 10,000 ft overview of the Direct Push method used by Exchange servers and Windows Mobile devices to keep the device in sync in near real time.
If you’re comfortable with basic networking concepts then you’ll easily consume the article and see how simple this technology really is. I for one, *love* Direct Push, though the wife doesn’t like it when the smartphone lightly chimes with ‘new mail’ at 3AM from my bed side table. 🙂
[found via Smartphone Thoughts]