Office365 from CSP to EA

Question

Parent Entity wants to Consolidate and bring the group entities under one tenant and domain.

Parent Entity and group entities are under CSP currently

Currently Partner Entity working on Office365 Consolidation and migration of Data of group entities to Parent tenant.

Question 1: We're discussing about having an EA contract and hence pls advise the right approach for consolidation and pros and cons

Answer 1

Hi @Anonymous ,

I see this in 2 aspects. One, migration of emails and data from one tenant to another and secondly, CSP & EA.

For the first one, tenant to tenant migration needs to be planned as per below,

If the domain and email address needs to be same, then this would be of help
https://learn.microsoft.com/en-us/exchange/mailbox-migration/migrate-mailboxes-across-tenants
https://learn.microsoft.com/en-us/microsoft-365/enterprise/cross-tenant-mailbox-migration?view=o365-worldwide#frequently-asked-questions
https://learn.microsoft.com/en-us/microsoft-365/enterprise/microsoft-365-tenant-to-tenant-migrations?view=o365-worldwide

If SMTP address needs to be retained, approach would be different as the domain cannot be verified in 2 different office365 tenants. This can be achieved by using third party tools for migration and rewriting SMTP addresses

https://www.quadrotech-it.com/blog/handling-email-domains-during-an-office-365-tenant-to-tenant-migration-part-one/
https://www.quadrotech-it.com/blog/handling-email-domains-during-an-office-365-tenant-to-tenant-migration-part-two/

For Hybrid scenarios, mailboxes can be offboarded to on-premise, remove the hybrid and re-configure the hybrid with new office365 tenant.

For Office365 licenses, target tenant should be added more licenses to accommodate the source data/users as part of the migration.

As per my understanding, EA & CSP are more of billing aspect and it differs between regions and services. For office365, it wouldn't be much different. However, as stated earlier, please contact Microsoft Account Manager/Support for more information.

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Answer 2

@Anonymous

Agree with AshokM-8240. Since EA is not supported in the Q&A forums, the supported products are listed over here: https://learn.microsoft.com/en-us/answers/products  (more to be added later on), it's recommended to reach out to Account & billing help for more suggestions.

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Answer 3

Hi,

EA agreement is suitable for minimum 500 users and for a minimum 3 year period whereas CSP is flexible and pay-as-you-go model. I would suggest you to please reach out to your Microsoft support to get more information.

https://www.microsoft.com/en-us/licensing/licensing-programs/enterprise?activetab=enterprise-tab:primaryr2
https://learn.microsoft.com/en-us/licensing/contact-us

Please Note: You should get this cross checked with licensing expert. This is a technical forum and I have shared information based on the research and information available online on MS licensing.

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Answer 4

Dear @Ashok M ,

Thank you for the details!

Well am looking for technical advise to understand what kind of dependencies are there when moving from CSP to EA since customer wants to consolidate all the users email & Data of their group entities under one tenant.

Few group entities are completely on cloud and few are on hybrid.

which is the best approach

1. First move all the group entities emails & data under on tenant and then move to EA. in this case, will there be again any migration required during moving to EA?
2. Move to EA and then Migrate the users and data under one tenant?
3. Any other approach

Thank you!