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Cross-tenant migration in Microsoft 365 refers to the process of moving data, users, and services from one Microsoft 365 tenant (also known as organization or account) to another. This type of migration is commonly required when organizations undergo mergers, acquisitions, or divestitures, or when there is a need to consolidate multiple tenants into a single one.
Microsoft provides several tools and methods to facilitate cross-tenant migration in Microsoft 365. Here are some options available:
1. Manual migration: This method involves exporting data from the source tenant and importing it into the target tenant manually. The specific steps may vary depending on the type of data (such as mailboxes, SharePoint sites, OneDrive files) and the migration tool being used. This approach is suitable for small-scale migrations or when there are specific requirements that cannot be met by automated tools.
2. Third-party migration tools: Various third-party vendors offer specialized migration tools designed to simplify the cross-tenant migration process. These tools often provide features like automated data extraction, mapping, and migration, reducing the complexity and manual effort involved. Examples of such tools include BitTitan MigrationWiz, Quest On Demand Migration, and ShareGate.
3. Microsoft native migration tools: Microsoft offers built-in migration tools that can assist with specific migration scenarios:
a. Exchange Online Hybrid Configuration: This method is primarily used for migrating Exchange Online mailboxes between tenants. It involves establishing a hybrid configuration between the source and target tenants, allowing for seamless mailbox migration.
b. SharePoint Migration Tool: Microsoft provides a free SharePoint Migration Tool that supports migrating SharePoint sites and content between tenants. This tool simplifies the migration process by providing a user-friendly interface and automated migration capabilities.
c. Azure Active Directory (Azure AD) tools: Azure AD provides several tools and capabilities for user and identity management, including cross-tenant migration scenarios. Azure AD Connect is often used to sync user accounts and groups between tenants, while the Azure AD Migration Tool can assist with migrating user accounts, groups, and application configurations.
It's important to note that cross-tenant migrations can be complex, and proper planning and preparation are crucial to ensure a smooth transition. It is recommended to thoroughly assess the requirements, consider the limitations of each migration method, and perform thorough testing before executing the migration in a production environment. Additionally, engaging with experienced migration consultants or Microsoft support can provide valuable guidance and assistance throughout the process.
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