Microsoft Entra Privileged Identity Management (PIM) now offers custom extensions in preview. This new capability allows organizations to integrate their unique business logic directly into PIM role activation workflows. This addresses the challenge of needing governance controls that extend beyond PIM's native features. Many organizations require validations like ticket number checks against ITSM systems. They also need to enforce HR-based access rules or integrate compliance workflows. Previously, these validations necessitated manual processes outside PIM, leading to potential enforcement and audit gaps.With custom extensions, PIM can call an organization's REST API during role activation. The API evaluates requests against specific business rules and returns an automated decision to PIM. This process involves PIM sending a request payload to the custom extension API, which then applies business logic and returns an outcome like Approved, AutoApproved, or Denied. The custom extension is invoked in the pre-approval stage, allowing for real-time decision-making. Every interaction is fully auditable, providing end-to-end traceability. Setting up custom extensions involves creating a REST API, securing it with Entra ID, onboarding it in PIM, linking it to role settings, and testing the flow. Example scenarios include ticket validation, HR compliance checks, auto-approval for on-call staff, and denying access outside approved windows. This feature contributes to Entra ID Governance's broader goal of ensuring the right access controls for critical assets.