Thomas.Poett@TEAMS (MVP Teams and Cross-Tenant M&A/D Migration Expert Lead)

  Teams Migration for Tenant to Tenant   The Microsoft Teams Tenant to Tenant Migration Guide I have separated into the several chapters. ·        Enterprise Voice ·        Team/Channel Migration ·        Personal Chat Migration Why Teams Migration in a tenant to tenant scenario is so complex? First, Teams makes extensive use of other M365 service, considered as shared services. Teams uses Enterprise Voice, with might be using Direct Routing, Calling Plans and Operators Connect. The shared part of Teams can get very planning extensive if you need to identify Channels and migrate them along with users. You can imagine how complex the web of Teams channel user can get. The initial advise is, you have to setup a team of experienced teams consultant for voice, devices and channels. This team of experts need to work very closely with the experts of other T2T migration streams, ...

 A cross tenant / tenant to tenant (T2T) migration also named sometime cross-tenant migration can be introduced during merger and acquisitions of companies. Hereby a tenant, local or geo-tenant will be integrated / migrated into the corporate target tenant. Cross Tenant Migrations are very complex and time consuming . Complexity can even further increase if the migration tenant is in a hybrid configuration. Time consuming, especially due to strict performance limitations in reading from and writing into a tenant.  This MUST not be underestimated !   This first blog article, will help you taking all consideration into place.   General Technical Aspects: •        System accesses and read permissions for external migration staff as well as service accounts for migration tools require a structured and early alignment with Security. Limitations will cause technical errors and misunderstandings during migration design and rollout. ...