Describe how you would design a zero‑trust architecture for a hybrid cloud environment, including key components, threat modeling, and integration with existing IAM.

Use the Zero Trust model + STRIDE threat modeling + layered architecture. 1) Define assets and trust boundaries. 2) Apply STRIDE to identify threats per layer. 3) Design micro‑segmentation, continuous authentication, and least‑privilege IAM integration. 4) Implement monitoring and response. 5) Validate with a proof‑of‑concept. 120‑150 words.

To design a zero‑trust architecture for a hybrid cloud, I start by mapping all assets and defining trust boundaries across on‑prem, SaaS, and IaaS components. I then apply the STRIDE threat model to each layer—network, application, data—to surface potential threats. Next, I implement micro‑segmentation and enforce least‑privilege access via an IAM system (e.g., Azure AD) with continuous authentication and MFA. I integrate a unified monitoring stack (SIEM + EDR) to detect lateral movement and anomalous behavior. Finally, I validate the design through a proof‑of‑concept, iterating on policy rules and alert thresholds. This approach ensures that every request is authenticated, authorized, and encrypted, regardless of origin, while aligning with regulatory requirements.