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Office 365, the rebranded, expanded successor to Microsoft's Business Productivity Online Suite (BPOS), today entered public beta. On top of the cloud-served Exchange Server, SharePoint Server, and Lync Server (formerly Office Communications Online) found in BPOS, Office 365 adds licensing for Office itself, both through Office Web Apps and the full desktop Office 2010 suite.

The service will eventually offer a range of pricing options, each with different levels of functionality; for the beta, services equivalent to two of the pricing tiers, one aimed at professionals and small businesses, the other aimed at enterprises, will be on offer. The small business offering is equivalent to the lowest pricing tier, "Plan P1," which will start at $6 per user per month. This offers e-mail and calendaring, SharePoint collaboration, Lync messaging, and access to the Office Web Apps—notably excluding access to desktop Office 2010.

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Source: Ars Technica