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Hybrid Identity Design

Atlanta, USA

GitHub Cloud2BR OSS - Learning Hub

Last updated: 2026-08-04


References

Objective

Create a resilient identity model where users access cloud and on-premises resources through a consistent authentication and authorization framework.

Hybrid identity scenario from Microsoft Learn

Source: What is hybrid identity with Microsoft Entra identifier service?.

Design decisions

Decision area Guidance
Identity source of truth Define authoritative identity attributes and lifecycle source
Synchronization model Define provisioning and synchronization scope and cadence
Authentication model Choose cloud-native, pass-through, or federated pattern based on constraints
Cutover model Pilot by cohort before large-scale authentication cutover

Migration stages

  1. Baseline current identity dependencies.
  2. Clean directory data and naming conflicts.
  3. Pilot synchronization and sign-in pathways.
  4. Enable policy controls and conditional access stages.
  5. Decommission legacy dependencies after proof.

Risks to control

  • Duplicate identities and inconsistent immutable attributes.
  • Overlapping legacy and new access policies.
  • Missing rollback path for authentication changes.