Learners can prepare for the MS-200 Planning and Configuring a Messaging Platform certification exam with this 23-video course exploring how to deploy, manage, and troubleshoot database availability groups (DAGs) to provide high availability and data recovery features in Exchange 2019. The course opens by exploring what to consider when planning for DAGs and how to create one with the EAC (Exchange administrator center). You will examine DAG membership, properties, and networks, then learn how to configure DAG members and add a mailbox database copy. Learners will see demonstrations of how to perform maintenance and install updates on DAG members, view the health of a DAG, and monitor for low disk space. Next, examine crimson channel event logging, switchovers and failovers, and how to use the EAC to perform a server switchover and remove a DAG. The course provides an overview of the high availability deployment process, active manager, disaster recovery, and site resilience. Finally, you will explore the third-party replication API included in exchange server and mailbox database copy management.