Ray Ozzie has never hidden his view that Microsoft’s army of developers and product managers have clung to a PC-centric view of the world for far too long.

Now, on the verge of leaving the company, he has penned a memo confronting a subject that is still taboo at the world’s biggest software company: that we have entered the Post-PC era.

Coming from the inside, this is as direct a warning as you could expect to hear about the threats that are now looming for Microsoft’s Windows and Office cash cows. Read more