It’s a service offered by Microsoft for anyone who wants a Hassle-Free and Pay-As-You-Use experience. Happened to see a live demo of Office 365 and it’s terrific to say the least.
MSFT may not be the first one to work on this, but they have certainly got an edge since it’s built on their flagship Product, Microsoft Office, which is used by millions of people out there.
Very impressive. More information here: Microsoft Office 365 – Get In The Cloud.