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

  Cross Tenant User Adoption Process   Change & Adoption is the most critical task in any tenant-2-tenant migration. Not only users who are migrated are impacted heavily by the migration. Users in the target tenant too. Especially in the target tenant they will experience constant changes. New users and groups are appearing, but not “life”, not actively working in the tenant. Further, new services related content will sequentially appear, like SPO sites, Teams Channel, Yammer or others. Since data is flying in slowly, there must be a communication and identification in place, that user are enabled identifying data source in migration. Same applies, for user in the source environment. Content/ data migrated will be in read-only. Content could become unavailable due to accomplished migration to the target. All depends on the migration process, procedures and planning. This needs to be communicated to all users in proper manner. Talking about external users, there is...

If you want to test the new amazing (but not jet feature rich) Teams client. Really awesome is the speed and I can't await that all features are available Here it comes and how to enable. You have to navigate into Team Admin Center.

 In this cross-tenant/ tenant-2-tenant migration book, I guide you through the holistic approach, which in deep exercise of Team Voice. I’m working as an Enterprise Solution Architect for Cross-Tenant migration, leading teams with more than 40 persons involved. Technically there are many more aspects, like 3rd party tools vs. Microsoft own solutions and scripts to be written. This book provides you an inside but not providing scripts and detailed configuration. Scripts and configurations are very much an individual approach for each cross-tenant migration. Two very special chapters will be released in 2023, handling and working with Guest User Access and Change & Adoption approach. Both are not only technically important but require a deeper look into their dependencies. Working on an end-2-end overview, technical considerations and understandable working template, this Migration book, it was work consolidated during the last 1 ½ years. DOWNLOAD HERE:  https://www.slidesha...

Dedicated White Paper to Microsoft TEAMS CROSS-TENANT Migration. The guide includes Teams Team/Channels, private/ personal chat and Enterprise Voice  (Direct Routing) migration explanation and recommendations. It is written for decision maker, project manager and solution architects. Download @ SlideShare  https://www.slideshare.net/thomaspoett/cross-tenant-migration-microsoft-teams

  Cross-tenant Shared DNS Space (Native Cross-Tenant Domain Sharing for Exchange Online)   Upcoming new features, describe and change migration approach, (private preview) Reference: Supporting Mergers, Acquisitions, and Divestitures in Microsoft 365 - Microsoft Community Hub   Microsoft has announced publicly a new expected solution architecture and some of the configuration and management tasks you must perform when utilizing native cross-tenant domain sharing functionality. Below, the step-by-step description to enable cross-tenant domain sharing for a single SMTP domain. (valid as long no major changes are introduced by MS) The domain will be Authoritative in the Tenant where you perform the primary domain management. Up on enablement for domain for cross-tenant domain sharing, you will be able to add the domain as an Internal Relay in additional tenants. An internal Relays is like in Exchange On-Premises relay configuration.     Cro...

  Personal Chat Migration into Azure Data Lake   Another approach, rudimentary described in the white paper is, migration or better said exporting Teams chat messages into Azure Data Lake solution.   To be said upfront, this is not a solution you or a consultancy company can do, rather you must engage Microsoft (MCS/PSS). This is an internal Microsoft solution using a private API for export.   There are several options on how data can be extracted: -           Single large XML file -           Individual XML files per Teams user There is no other way yet, rather than using XML. Further, you must purchase an Azure VM and Azure Storage. The costs aren’t too high and acceptable. After Chat message extraction, the consolidated XML file will be sent via email or copied into OneDrive.   Talking about user experience. This is not a user-friendly option! As u...

  Cross Tenant User Migration Approach and considerations In any Tenant 2 Tenant migration the migration approach you have to consider based on: ·        Migration Tools ·        Communication/ Work clusters ·        User and shared data The combination and dependencies of the above will guide you to the best possible decision, how you migrated a tenant and merge it into the target environment. Migration of data is time consuming. We explained the tenant limitation (throttling) in a chapter above. Nevertheless, pre-loading of data into the target tenant is crucial including the sequence required for planning.   Migration Tools There are multiple vendors on the market providing tools, tool sets. They either run on-premises, in Azure or have developed their own cloud-based solution. Principally you will consider a mix of different tools and vendor. Most companies run a h...