Office 365 is the brand name Microsoft uses for a group of subscriptions that provides productivity software and related services.

For consumers, the subscription allows the use of Microsoft Office apps on Windows, macOS, iOS, Android and Windows 10 Mobile, provides storage space on the OneDrive file hosting service, and grants 60 Skype minutes per month.

For business users, Office 365 also offers service subscriptions for e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer.

With the release of Microsoft Office 2013, Microsoft expanded Office 365 to include new plans aimed at different types of businesses, along with new plans aimed at general consumers wanting to use the Office desktop software on a subscription basis and receiving updates to the software over the life of the subscription.