Apple's OS Edge Is a Threat to Microsoft

The 20-year death grip that Microsoft has held on the core of computing is finally weakening—pried loose with just two fingers. With one finger you press "Control" and with the other you press "right arrow." Instantly you switch from a Macintosh operating system (OS) to a Microsoft Windows OS. Then, with another two-finger press, you switch back again. So as you edit family pictures, you might use Mac's iPhoto. And when you want to access your corporate e-mail, you can switch back instantly to Microsoft Exchange.

This easy toggling on an Apple computer, enabled by a feature called Spaces, was but an interesting side note to last fall's upgrade of the Mac OS. But coupled with other recent developments, the stars are aligning in a very intriguing pattern. Apple's (AAPL) recent release of a tool kit for programmers to write applications for the iPhone will be followed by the June launch of iPhone 2.0, a software upgrade geared toward business users.

Taken together, these seemingly unrelated moves are taking the outline of a full-fledged strategy. Windows users, in the very near future, will be free to switch to Apple computers and mobile devices, drawn by a widening array of Mac software, without suffering the pain of giving up critical Windows-based applications right away. The easy virtualization of two radically different operating systems on a single desktop paves a classic migration path. Business users will be tempted. Apple is positioning itself to challenge Microsoft for overall computing dominance—even in the corporate realm.