Sorm for updating multiple database records

For more information about AADConnect, see Integrating your on-premises identities with Azure Active Directory.

Exchange Active Sync clients will be seamlessly redirected to Office 365 when a user's mailbox is moved to Exchange Online.

If you want to know about features that have been removed or replaced in Exchange 2019, see What's discontinued in Exchange Server.

For more information about deploying Exchange 2019, see Planning and deployment for Exchange Server.

For more information about Share Point Server 2019, see New and improved features in Share Point Server 2019.

When an Exchange 2019 user receives a Word, Excel, or Power Point file in an email attachment, and the file is stored in One Drive for Business or on-premises Share Point, the user will now have the option of viewing and editing that file in Outlook on the web alongside the message.

For more information about the Exchange 2019 architecture, see Exchange architecture.

Along with the new Mailbox role, Exchange 2019 now allows you to proxy traffic from Exchange 2013 Client Access servers to Exchange 2019 mailboxes.

For more information, see MAPI over HTTP in Exchange Server.Other than that, the Mailbox server in Exchange 2019 includes all of the server components from the Exchange 2013 Mailbox and Client Access server roles: The Edge Transport role is typically deployed in your perimeter network, outside your internal Active Directory forest, and is designed to minimize the attack surface of your Exchange deployment.By handling all Internet-facing mail flow, it also adds additional layers of message protection and security against viruses and spam, and can apply mail flow rules (also known as transport rules) to control message flow.With Exchange 2019, we reduced the number of server roles to two: the Mailbox and Edge Transport server roles.Unified Messaging (UM) has been removed from Exchange 2019.

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