The copy offers prompt access to your data and is often updated with the server that runs Microsoft Exchange. Cached mode is the default when you add an exchange or Microsoft 365 account.
The server side is Microsoft Exchange Server and the featured client program is Microsoft Outlook, which includes contacts and calendaring. Prior to Outlook, which was introduced with Office 97 ...
Upgrade to Exchange Online or Exchange Server SE Microsoft advises admins to migrate to Exchange Online (available as an Office 365 subscription or a stand-alone service) or prepare to upgrade to ...