Azure AD B2C to Entra External ID: Migration Strategies You Need to Know

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Azure AD B2C to Entra External ID: Migration Strategies You Need to Know

Microsoft is sunsetting Azure AD B2C by 2030. In this episode, we dive into what Entra External ID means, migration paths available & some brand-new strategies for moving millions of users seamlessly.

Merill Fernando

Oct 04, 2025

Transcript

In this episode, I sit down with my longtime friends and colleagues, Jas Suri and Gayan Randeny, at Microsoft’s campus to unpack the biggest Microsoft consumer identity shift in years—Azure AD B2C’s sunset and the rise of Entra External ID. We talk about why B2C is going away, the crazy scale of tenants with 100M+ identities, the migration paths and what the future looks like for customer identity.

Plus, stick around until the end because Gayan and Jas share a world premiere on the podcast about a groundbreaking new Just-In-Time migration approach that will make moving millions of users to Entra External ID simpler than you think. You don’t want to miss this scoop!

If you want to stay ahead of this massive transition, this is a must-listen.

Subscribe with your favorite podcast player or watch on YouTube 👇

About Jas Suri

Jas Suri is the CxE Architect PM for Microsoft Entra External ID and has a wealth of knowledge and experience in helping Microsoft customers deploy Azure AD B2C and Entra External ID. With extensive experience in Azure AD B2C and Entra External ID migrations, Jas has now taken on the CxE architect role for passkeys across both Entra ID and Entra External ID..

LinkedIn - https://www.linkedin.com/in/jas-suri-aa644a7b/

About Gayan Randeny

Gayan Randeny is a seasoned expert in customer identity and access management at Microsoft, with years of experience helping customers deploy Azure AD B2C and now leading efforts to migrate to Entra External ID. In addition to his work on Entra External ID, Gayan is now turning his attention to help enterprise customers deploy Global Secure Access.

LinkedIn - https://linkedin.com/in/gyanrandhani

🔗 Related Links

Migrating users to Microsoft Entra External ID - https://learn.microsoft.com/en-us/entra/external-id/customers/how-to-migrate-users
Microsoft Entra External ID deployment architectures with Microsoft Entra - https://learn.microsoft.com/en-us/entra/architecture/external-identity-deployment-architectures
Azure Active Directory B2C: Custom CIAM User Journeys - https://github.com/azure-ad-b2c/samples

📗 Chapters

00:00 Intro
00:57 What is B2C and why it mattered
03:44 The insane scale of B2C (100M+ identities)
05:02 Why B2C is going away
07:20 Converging enterprise and customer identity
12:01 Migration differences: B2C vs Entra External ID
18:24 Just-in-time and passwordless migration
23:09 Hybrid tenant approach explained
29:15 Migration strategies and best practices
33:29 New features, partners, and what’s next
36:44 Closing thoughts