Entra External ID - Migration Readiness Assessment

At a glance
Microsoft Entra External ID is Microsoft's next-generation CIAM platform, replacing Azure AD B2C with a unified, enterprise-grade solution for managing customers, partners, and guests. It delivers built-in Conditional Access, adaptive MFA, modern SDKs, and simplified user flows — with all future Microsoft CIAM investment landing here, making migration a strategic priority.

Slalom's Migration Readiness Assessment gives your organization a clear-eyed view of what it takes to move from Azure AD B2C to Microsoft Entra External ID — and a roadmap to get there with confidence.

Build Your Migration Foundation

We partner with your identity, security, and application leaders to:
* Assess your current B2C environment, custom policies, user flows, and application integrations
* Identify capability gaps and map B2C features to EEID equivalents
* Design your target state EEID architecture
* Develop a prioritized migration strategy and phased roadmap
* Prioritize actions to minimize disruption and reduce risk

Workshop Agenda

* Current State Assessment
* Identity Population & Credential Analysis
* Capability Gap & Risk Evaluation
* Target State Architecture
* Migration Strategy & Roadmap

What is Microsoft Entra External ID?

Microsoft Entra External ID represents the evolution of customer identity — a modern, unified platform built natively into Microsoft Entra to securely manage external identities at enterprise scale. It replaces Azure AD B2C and delivers built-in Conditional Access, adaptive MFA, modern developer SDKs, customizable user flows, and native federation with social and enterprise identity providers. All new Microsoft CIAM features and capabilities are being built exclusively on this platform.

Why Migration Matters

Migrating existing B2C tenants — including custom policies, user directories, application integrations, and downstream services — requires careful planning and deep technical expertise. Organizations that act now reduce risk, simplify complexity, and position themselves for continuous innovation on the Microsoft Entra platform.

Engagement Outcomes

* Migration Readiness Scorecard: A clear assessment of your B2C environment and migration complexity
* Target State Architecture: EEID tenant design aligned to your security and application requirements
* Risk and Gap Analysis: Identified gaps and mitigation recommendations across policy, credential, and integration workstreams
* External Identity Governance Recommendations: Guidance on identity lifecycle automation, policy based access controls, and separation of duties.
* Prioritized Migration Roadmap: Phased plan with effort estimates and recommended next steps

Why Slalom?

Slalom brings deep expertise in Identity Governance, External Identities, and secure customer access. Our proven B2C to Entra External ID migration approach combines strategy, architecture, and delivery accelerators to reduce risk and simplify complex migrations — while unlocking the full value of the Microsoft Entra platform.

Next Steps

Contact Slalom to schedule your Migration Readiness Assessment and receive a customized roadmap for your B2C to Entra External ID journey.

** Pricing for the Entra External ID - Migration Readiness Assessment and any follow-on Migrations are based on scope of the engagement.