Subscription migration impact in office365, Azure AD, Intune and Azure

Question

Dear Team,
We are currently using below office365 subscriptions and pay-as-you-go plans in azure.
Now we want to migrate our office365 subscriptions to MPSA and Azure to CSP.

We have some queries regarding migration impact in our environment:

• Our all accounts are in cloud and our all users computer are joined into Azure AD & Intune. After migration all users computers required to re-join with Azure AD again?
  Any other impact in Azure AD and Intune?
• We have many policies created in Intune. Any impact in those policies?
• We have configured bitlocker in user laptops and keys are saved in Azure AD and Intune. Any impact on those keys?
• We have configured SSO in Azure AD for 3rd party applications. Any impact in these SSO authentications?
• Any impact in mailboxes, SharePoint sites data and ATP policies after migration?

Office365 subscription

• Office365 E3 : (E3)
• Microsoft Office365 Business Basic : (Business Basic)
• Advanced Threat Protection / Microsoft Defender for Office 365 : (Plan-2)
• Enterprise Mobility + Security E3 (Azure AD Premium P1 and Intune) : (E3)

Azure Plan:

• Azure WebApp : (S2: 1), Qty: Pay-As-You-Go
• Azure SQL Database: (Standard S1: 20 DTUs) , Qty: Pay-As-You-Go
• Azure VM: (Standard A2m v2), Qty: Pay-As-You-Go

Answer 1

@Rocky Mondal Thanks for posting in our Q&A.

From intune's point of view, if still has intune subscription and intune license after subscription migration, I think it will have no impact in intune.

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Answer 2

This is not a simple task and have a lot of moving elements. This needs to be properly planned so I’ll suggest you higher an MSP to do this for you.