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Assigned as Security / Identity reviewer · ARQ-DEMO-LEGACY-MOD

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RequestDomainRiskStatus
Legacy Application Modernisation — Customer Portal
ARQ-DEMO-LEGACY-MOD
Security / IdentityMediumIn Review

Context summary

Focused brief prepared for your domain — you don't have to re-read the whole request.

The customer portal runs on an unsupported legacy runtime and is difficult to maintain. A phased strangler-fig modernisation is proposed while preserving customer-facing availability.

Request type
Application modernisation / replacement
Business capability
Customer Engagement / Digital Self-Service
Systems involved
Legacy customer portal, Oracle customer database, Entra ID authentication, Power BI reporting, Downstream customer notification services, Target cloud platform (Azure or AWS — TBD)
Data involved
Customer account/profile data, Authentication data, Operational reporting data

Key risks in your domain

  • Customer identity and access regression

    Medium

    Legacy portal uses local accounts; migration to Entra ID may miss edge roles or break sign-in for a subset of customers.

    Suggested control: Role mapping audit; pilot with shadow access checks; access review post cutover.

Focused questions for the requester

  • What is the customer identity migration approach with Entra ID?
  • How will authentication and session continuity be handled during phased migration?
  • How will access roles and entitlements be mapped from legacy to the new platform?
  • What regression testing will verify no customer access breakage?
  • How will privileged access and service accounts be controlled during cutover?
Related cross-domain dependencies
  • What criteria will drive the Azure vs AWS decision and when?
  • Has a full dependency map been produced for the customer portal?
  • What rollback criteria apply per phase cutover?
  • How will customer data be synchronised and reconciled between legacy and modernised components?

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