EA to CSP Migration: Microsoft’s New Reality, CSP Partners’ Big Opportunity

Amar Paatil

September 18, 2025

6:37

What's new (July 2026): Microsoft has expanded access to its EA-to-CSP for Azure tool, so more partners can now move Azure customers off Enterprise Agreements and into CSP. Here is what changed, what both migration tools do, and where the opportunity sits.

Microsoft's move off Enterprise Agreements is now well underway, and the Azure transition tool just opened up to more partners. Here is what is changing, and where the opportunity sits.

Executive summary

As of November 1, 2025, Microsoft aligned EA, MPSA, and OSPA online services pricing to list price at renewal, so EA customers lose many volume discounts.
Organizations of roughly 2,400 users or fewer move to CSP or MCA-E at their next renewal. Larger enterprises can still hold EA but may face higher costs at renewal.
New (July 2026): Microsoft expanded access to the EA-to-CSP for Azure tool beyond Azure Expert MSP to partners with a Cloud and AI Solutions Partner designation and CSP direct bill authorization.
The catch: the licensing move is simple, but billing is complex. Data gaps, reservations, and catalog changes can cause 2 to 3% margin leakage if unmanaged.
The opportunity: partners who automate billing and renewals can win EA customers and protect margin.

The migration tools, and what they do

Microsoft provides two distinct paths in Partner Center, and the Azure one is the piece that just changed.

Azure: the EA-to-CSP for Azure tool (new in July 2026). Transfers the Azure billing relationship into CSP with no service interruption. Subscription and resource IDs are preserved, and the customer approves the move in Azure. As of July 2026, access is open beyond Azure Expert MSP to partners with a Cloud and AI Solutions Partner designation plus CSP direct bill authorization. It requires an Azure plan and Microsoft Customer Agreement, and supports Direct EA subscriptions.

Seat based: channel transfers. Renews Microsoft 365, Office 365, and Teams subscriptions from EA directly into CSP. It keeps existing SKUs even where they are end of sale, aligns renewal dates, and prevents double billing. It runs in the 90 day window after the EA ends, is UI driven, and is designed for account by account moves rather than bulk migration.

Why now: Microsoft's commercial reset

For years, EA was the domain of large LSPs and LARs, legacy partners with scale and special status. CSP partners could not compete in that motion. That has changed.

Microsoft is reshaping its commercial model around the Cloud Solution Provider program, a flexible, partner led way to buy cloud services. From November 1, 2025, online services pricing under EA, MPSA, and OSPA aligns to Microsoft's list price at renewal, so many EA customers lose their traditional volume discounts. At the same time, CSP has grown up: three year terms (available since June 2025 for Microsoft 365 E3 and E5 and Teams Enterprise), monthly and annual billing, and dedicated migration tooling for both seat based and Azure workloads. CSP now matches EA's stability while adding flexibility.

What EA to CSP migration really means

This is not just a contract switch. It is a structural shift in how Microsoft expects customers to consume cloud services, and in how partners operate.

For customers: no more one size fits all. CSP brings flexible terms, local partner support, and scalability.
For CSP partners: every EA renewal is now open competition. Winning takes more than reselling SKUs. It takes operational excellence in billing, catalog management, and compliance, and it is a chance to win accounts EA incumbents once locked down and to build lasting CSP relationships.

The catch: where partners need to focus

Microsoft makes the license transfer relatively straightforward. Billing is where partners miss.

Billing and utilization data does not transfer with the subscription.
Azure Reservations and Savings Plans often do not migrate and must be repurchased.
Invoicing gaps appear if billing is not aligned to the cutover, which can cascade into revenue leakage and cash flow strain.

At enterprise scale, even 2 to 3% revenue leakage is around $200K lost per $10M of CSP business. That is the difference between a migration that grows margin and one that quietly erodes it.

Microsoft moves the license. Work 365 runs the revenue.

The tools solve the transfer. They do not touch the operational layer that decides whether the migration is profitable. That is where Work 365, the revenue and operations platform for Microsoft CSP partners, does its work.

Microsoft's tool moves the license: the subscription and billing relationship transfer, at the tenant level, with no data movement and no downtime.

Work 365 runs the revenue that follows:

Invoice alignment at cutover, so there is no double billing and no missed revenue.
Revenue event capture on every change, upgrade, and cancellation.
Catalog and SKU mapping across Microsoft, ISV, and your own services.
Multi-currency billing and renewal management at scale.
Sync with Partner Center, CRM, ERP, and PSA for audit ready accuracy and margin visibility.

Work 365 mirrors Microsoft's billing cadence of monthly, annual, and triennial while letting you run custom partner terms, and it brings price, catalog, and self-service management for enterprise customers. The result is a clean cutover and protected margin, not a leaky one.

Innovia Consulting grew its CSP business by 300% without adding headcount. GadellNet recovered 2 to 3% of revenue that was leaking, with a return on investment inside three months.

What to do now

If your customers have EA renewals coming up, you have a choice. Let them renew at list aligned prices with less flexibility, or help them move to CSP where you deliver flexibility, value, and partner led support. The move also lines up with FY27, where earning now follows growth and premium adoption. See our companion post on the FY27 CSP incentive changes for how the two connect.

The partners who win will be the ones who map their EA renewals early and make the cutover clean. Book a CSP migration strategy session with Work 365, and we will help you align contracts, automate the billing cutover, and turn Microsoft's commercial shift into your growth advantage.

1. What is EA → CSP migration?

EA → CSP migration is the process of moving a customer’s Microsoft services from the Enterprise Agreement (EA) licensing model to the Cloud Solution Provider (CSP) model. It usually happens at EA renewal and involves shifting licenses (M365, Dynamics, etc.) or Azure subscriptions into CSP, where a partner manages billing, provisioning, and support.

2. Why is Microsoft pushing EA customers to CSP now?

As of November 1, 2025, Microsoft will align EA, MPSA, and OSPA Online Services pricing to the Microsoft.com list price, removing many EA volume discounts. At the same time, CSP now offers enterprise-grade features like 3-year terms, monthly/annual billing, and migration tooling. Microsoft wants more commerce to flow through CSP and MCA-E, not legacy EA models.

3. What migration tools does Microsoft provide?

There are two. A seat based channel transfers tool in Partner Center renews Microsoft 365, Office 365, and Teams subscriptions from EA into CSP, keeping end of sale SKUs and avoiding double billing. A separate EA-to-CSP for Azure tool transfers the Azure billing relationship. In July 2026 Microsoft expanded access to the Azure tool beyond Azure Expert MSP to partners holding a Cloud and AI Solutions Partner designation with an active CSP direct bill authorization.

4. Can Azure subscriptions be migrated from EA to CSP?

Yes, with conditions. The customer must have an Azure plan and accept the Microsoft Customer Agreement, and only Direct EA subscriptions are supported. Historically only Azure Expert MSPs could run the transfer; since July 2026 partners with a Cloud and AI Solutions Partner designation and CSP direct bill authorization can also get access. Billing and utilization data does not transfer, and Azure Reservations and Savings Plans generally must be repurchased.

5. Who is most affected by the EA changes?

Organizations of roughly 2,400 users or fewer, who move to CSP or MCA-E at their next renewal after November 1, 2025. Larger enterprises can still hold EA but may face higher costs at renewal from the loss of volume discounts. LSPs and LARs also lose exclusivity, since CSP partners can now compete for EA renewals.

6. How does Work 365 support EA to CSP migration?

Microsoft's tools move the license. Work 365 runs the revenue side that follows: it aligns invoices at cutover to prevent double billing, captures every revenue event, maps catalogs and SKUs, handles multi-currency and renewal management, and syncs with Partner Center, CRM, ERP, and PSA systems so partners protect margin and avoid the 2 to 3% leakage an unmanaged cutover can cause.