Microsoft Online Services is  Microsoft's hosted-software offering and a component of their software plus services strategy.Microsoft Online Services are hosted by Microsoft and sold "with" Microsoft partners.

The suite includes Exchange Online, SharePoint Online, Office Communications Online, Microsoft Forefront, and Microsoft Office Live Meeting.

For businesses, the Software-plus-Services approach enables organizations to access the capabilities of enterprise software through on-premises servers, as online services, or a combination of both, depending on specific business requirements. Services also provide the option to add complementary capabilities that enhance on-premises server software and simplify system management and maintenance

• Exchange Online
• SharePoint Online
• Office Communications Online
• Microsoft Office Live Meeting
• Microsoft Cloud Migration
• Microsoft Office 365