Tenant to Tenant Migrations

Office 365 Tenant to Tenant Migrations

Being involved in a merger or acquisition can be an exciting time as it often signifies growth and expansion. However, this also comes with the complexity of merging multiple IT environments.

Key things to consider when migrating O365 tenants include:

  • Determining what tools are available and which ones to use
  • Complexity of content
  • Legal and compliance ramifications
  • Support desk changes
  • Supporting disparate systems
  • Dealing with duplicate products for the same function
  • Time constraints, and more.

Generating a relevant inventory, along with planning and communications, are essential for successful and timely completions. This can be an overwhelming task for many organizations to handle on their own. Leveraging Spyglass MTG’s Office 365 Tenant to Tenant solution, including our proven migration methodology, program assets, tools and accelerators, can help your organization achieve a successful and cost-effective IT integration of Microsoft platforms.

Core elements of the Office 365 platform that can be migrated from one tenant to another:

  • User Profiles and Identities
  • Messaging (Email, Calendar, Contacts, and Tasks)
  • OneDrive for Business – personal drives
  • SharePoint – Classic and Modern sites; see highlights below
  • Teams – Teams, files, channels, and conversations / chat; see highlights below
  • Power Apps, Power Automate, Power BI

Our Migration Process:

discovery planning migration transition


We conduct workshops, run automated tools, and generate reports to gather information regarding the source content so we can help you to analyze the existing environment.




We take the output of the Analysis and Inventory stage and work with you to determine usage and priority for what content should and should not be migrated.




Depending on the complexity and the volume of the content and permissions to be migrated, we define a process that leverages proof of concept and pilot stages as needed to ensure the successful migration of content to the destination Microsoft platform.


To wrap up the process, we share our knowledge with you regarding how best to adopt, utilize, and manage the new technology while also assisting with planning and execution if needed with sunsetting your old technology.


Tenant to Tenant Migration Tools and Accelerators

Spyglass leverages it’s own proprietary migration tools and templates as well as other commercial tools based on each client needs, some of our tools include:


SharePoint Site Tenant to Tenant Migration Tool

We can migrate core SharePoint assets and configuration including Site Collections (classic and modern), Sites and Subsites, People and Groups, Permission levels, Taxonomy, Document Libraries, Standard and Custom Lists, Pages and Page Libraries, Workflows, and InfoPath Forms for a complete migration.

We are able to gather information for People, and Groups, Permission Levels, Site details (List and Libraries), Taxonomy, Workflows, and InfoPath forms. Upon review of the inventory assessment and the Office 365 SharePoint Site hierarchy, we will work with you to determine what sites and assets that need to be migrated and to plan the full migration.

Source Office 365 tenant users are mapped to the respective Target Office 365 tenant users to ensure created/modified content is migrated and retained under the respective users.

Migrate SharePoint content and custom solutions as per the table outlined below:



We produce a report representing the detailed migration status for all core elements that are migrated. This is used to confirm core aspects have completed successfully and to investigate if any data transfer was interrupted or generated an error while the migration was underway.

Microsoft Teams Channels and Chats Tenant to Tenant Migration Tool

Migrate MS Teams channels and chat conversations from one Office 365 tenant to another Office 365 tenant.
We can access and migrate the MS Teams channels and chats on-behalf of actual target Office 365 users.
We are able to identify the Office 365 tenant users list, MS Teams channels list, along with public/private channels message & attachment volumes, and group/direct chats message volumes.

Source Office 365 tenant users are mapped to the respective Target Office 365 tenant users to ensure the  content is migrated and conversations are retained under the respective mapped users.

We create new MS Teams channels on the target Office 365 tenant to map with the source MS Teams channels in order to execute the migration.

Based on Source & Target Office 365 Teams channel mapping, we proceed with the conversation migration. Files will be displayed on the migrated Teams channel files tab.

Based on User Mapping and the migrated Teams channel mapping, MS Team Owner/Members will be migrated.

Map Source chat with Target chat based on users. Migrated files will be displayed on the files tab and shared to the chat members.

We are able to track the migration details to confirm core aspects have completed successfully and to investigate if any data transfer was interrupted or generated an error while the migration was underway.


Speed up your move by leveraging our proven accelerators and over 15 years of experience. Have questions or want to learn more? Contact us today!

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