Move to the current version of Exchange Server, whether it be stand-alone, on-premises, or in a hybrid configuration with Exchange Online. This updated edition provides background information on Exchange 2019, and teaches you how to bring it up to date and keep it up to date in a consistent state.The book starts with an introduction to Exchange Server, Active Directory, Exchange Online, and Azure Active Directory (AD). It takes you through designing and installing Exchange Server and guides you in managing it. You will learn Microsoft 365 integration with Azure AD in your Exchange Server. Moving to Exchange Online, Mail Flow, and authentication are also discussed, so you will better understand hybrid transport. As you progress through the book, you will see how to secure your Exchange Server with Azure App Proxy, message hygiene, and multi-factor authentication. Also covered are corporate compliance needs such as backup and restore, message records management, auditing, and information rights management.