Description #

In Microsoft 365, groups empower you to select a specific group of individuals with whom you want to collaborate seamlessly. They also facilitate the setup of a suite of resources designed for easy sharing among group members. These resources encompass shared features like a collective Outlook inbox, a shared calendar, or a document library for collaborative file work.

The beauty of groups lies in their automatic permission assignment. When you add members to a group, they automatically gain the necessary permissions to access and utilize the tools offered by the group. In essence, groups represent an enhanced and modernized alternative to the traditional usage of distribution lists or shared mailboxes for similar collaborative purposes.

Migrating a Microsoft 365 Group with a mailbox is a critical operation that involves transferring an entire collaborative workspace, along with its associated mailbox, from one Microsoft 365 tenant to another. This process is often undertaken in scenarios such as company mergers, acquisitions, or tenant consolidations when it becomes necessary to realign digital resources for effective collaboration.

IT Partner responsibilities #

1. Plan and prepare for the migration by assessing the environment and setting up the target tenant.
2. Configure the source and target environments for migration, including setting up the necessary permissions and creating a migration batch.
3. Detailed Inventory. Create a detailed inventory of all the Microsoft 365 groups that includes their names, sizes, permissions, and any specific configurations.
4. Monitor the progress of the migration.
5. Verify that all data has been successfully migrated and perform any necessary post-migration tasks.
6. Minimize user intervention during the migration process.

Client responsibilities #

1. Provide a dedicated point of contact responsible for working with IT Partner.
2. Coordinate any outside vendor resources and schedules.

Prerequisites #

1. Tenant to tenant mailbox migration project from IT Partner.

Plan #

1. Kickoff meeting.
2. Pre-migration source system health check.
3. Creating Microsoft 365 Groups.
4. Groups Mailboxes migration start.
5. Verification of groups migration.
6. Changing MX record to new Microsoft 365 tenant.
7. Final group migration.
8. Post-migration tasks.

Success criteria #

1. All mailbox data and configurations are successfully migrated from the source tenant to the target tenant accurately and without loss. This includes emails, folders, rules, and permissions.
2. The migration process has caused as little disruption as possible.