to the Exchange Online section of the Exchange TechNet Wiki, your source for guidelines and information written by the community for the community. Exchange Online is part of Office 365.
If you're looking for the official Exchange Online product documentation, please follow
Microsoft Exchange Online is designed for organizations who want to get the benefits of cloud-based email without sacrificing the business-class capabilities that Exchange Server has been providing for decades.
Exchange Online provides the core features of Exchange Server, so your users get the business-class messaging capabilities they need to be productive including:
The Exchange Online version included with Office 365 is built on the same technology as Exchange Server 2010 SP1. This Exchange Online version provides organizations with the latest capabilities including built-in archiving, optional Conversation View, and
Mail Tips, along with powerful web-based tools for managing online deployments. With this Exchange Online version, Microsoft handles the ongoing maintenance, patches, and upgrades of the Exchange infrastructure while providing IT administrators the control
and flexibility they require just like they do now with the version included with BPOS.