description Microsoft Exchange Server Overview
Microsoft Exchange Server is a server platform providing email hosting solutions primarily for businesses. It facilitates management of email communication alongside calendaring, contact storage, and task tracking. Organizations requiring robust on-premise email infrastructure and centralized control over user data utilize Exchange Server. Its features are particularly relevant to larger enterprises and IT departments responsible for managing corporate communications.
help Microsoft Exchange Server FAQ
Is Microsoft Exchange Server the same thing as Exchange Online?
No. Exchange Server is the on-premises mail and calendaring server that runs on Windows Server, while Exchange Online is Microsoft's hosted service inside Microsoft 365.
What came after Exchange Server 2019?
Microsoft released Exchange Server Subscription Edition, usually called Exchange Server SE, on July 1, 2025. Exchange Server 2019 was the major on-premises version before that.
Which clients and protocols does Exchange Server support?
Microsoft Outlook commonly connects to Exchange using Microsoft's MAPI-based protocols, while Exchange also handles SMTP for mail transport. Administrators can also enable client access methods such as IMAP, POP and Exchange ActiveSync depending on policy.
Why do companies run Exchange in hybrid mode?
A hybrid Exchange setup lets an organization keep some mailboxes on-premises while moving others to Exchange Online. That is common during staged Microsoft 365 migrations or when Active Directory and compliance rules still require local Exchange components.
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