Introduction

As managing vice president, Rob Helm covers Microsoft collaboration services and client software. His 25-plus years of experience analyzing Microsoft’s... more

Office 365 is a set of subscription plans that combine Microsoft-hosted services, such as Exchange Online e-mail, with on-premises software, such as the Office desktop suite and Office applications for iPad.

Office 365 subscription plans include one or more of the following components:

Exchange Online, a messaging and collaboration service based on Exchange Server 2013 that also incorporates the Exchange Online Protection filtering service
Exchange Online Archiving, which enables organizations to centrally maintain Microsoft-hosted archives of e-mail and other Exchange Online or Exchange Server content for legal discovery, backup, and other purposes
SharePoint Online, a service for document sharing (including a component called OneDrive for Business), Web-based collaboration, and other functions based on SharePoint Server 2013
Lync Online, an instant messaging, presence, and Web conferencing service based on Lync Server 2013
Office 365 ProPlus, client-side software similar

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