Applies to: Exchange Server 2010 SP2
Topic Last Modified: 2011-11-08
A hybrid deployment offers organizations the ability to extend the feature-rich experience and administrative control they have with their existing on-premises Microsoft Exchange organization to the cloud. A hybrid deployment provides the seamless look and feel of a single Exchange organization between an on-premises organization and a cloud-based organization. In addition, a hybrid deployment can serve as an intermediate step to moving completely to a cloud-based Exchange organization.
Hybrid Deployment Features
A hybrid deployment enables the following features:
- Mail routing between on-premises and cloud-based
- Mail routing with a shared domain namespace. For example, both
on-premises and cloud-based organizations use the @contoso.com SMTP
- A unified global address list, also called a “shared address
- Free/busy and calendar sharing between on-premises and
- Centralized control of mail flow. The on-premises organization
can control mail flow for the on-premises and cloud-based
- A single Outlook Web App URL for both the on-premises and
- The ability to move existing on-premises mailboxes to the
- Centralized mailbox management using the on-premises Exchange
Management Console (EMC).
- Message tracking, MailTips, and multi-mailbox search between
on-premises and cloud-based organizations.
Hybrid Deployment Components
A hybrid deployment involves several different services and components:
- Microsoft Office 365 The
Office 365 service provides a cloud-based Exchange
organization as a part of its subscription service. Organizations
configuring a hybrid deployment must create and configure this
cloud-based Exchange organization.
- Hybrid Server A hybrid server is an
Exchange Server 2010 server that is installed in your existing
Exchange organization, and it's required for hybrid deployments. It
enables messaging features and messaging delivery between your
existing Exchange organization and the Office 365-based
- Microsoft Federation Gateway The
Microsoft Federation Gateway is a cloud-based service offered by
Microsoft that acts as the trust broker between your on-premises
Exchange 2010 organization and the cloud-based Exchange
organization. Organizations configuring a hybrid deployment must
create a federation trust with the gateway.
Learn more at: Microsoft Federation Gateway
- Active Directory Synchronization Active
Directory synchronization replicates on-premises Active Directory
information for mail-enabled objects to the cloud-based
organization to support the unified GAL. Organizations configuring
a hybrid deployment must deploy Active Directory synchronization on
a separate, on-premises server.
Learn more at: Active Directory synchronization: Roadmap