It comes in two flavors: a cloud version that is delivered over the Internet,
Both of these come in a few versions too. Office 365 University is for college
There's also the Office 365 Home Premium version, which is a single subscription meant to cover a family, or up to 5 users. Microsoft previously announced that it will cost about $100 a year, or $8.33 per month.
The downloadable-software versions also come in different versions: Office Home & Student 2013, Office Home & Business 2013, and Office Professional 2013. Those will cost $139.99, $219.99, and $399.99, respectively.
If you need Office for more than one computer in the house, it's obviously less expensive, at least at first, to buy the cloud version for $99 a year than to buy Office 2013 for multiple computers.
While it's true that you can also get a scaled-down version of Office for free via Microsoft's SkyDrive, these new versions of Office are set up to work with Windows 8 touch devices.
Google Apps, which competes most directly with Office 365, is free for schools. For businesses, it costs $50 per user per year.
Microsoft is releasing new business versions of Office 365 for Windows 8 on February 27.
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