Zero trust is not a single product purchase; it is a set of policies enforced consistently across identity, devices, networks, applications, and data. The goal is simple: never assume trust based on network location alone.
Start with identity as the control plane. Strong MFA, phishing-resistant factors for privileged roles, and continuous session risk scoring form the backbone. Map every application to an identity provider and eliminate long-lived shared credentials.
Micro-segmentation and explicit service-to-service authentication reduce blast radius. Service meshes or sidecar proxies can enforce mTLS and policy without rewriting every service at once.
Data protection completes the picture: classify sensitive stores, encrypt at rest and in transit, and monitor exfiltration patterns. Logging and SIEM correlation should tie user, device, and resource context into each alert.
Roll out in waves — pilot with a high-value application team, measure mean time to contain, then expand. Executive sponsorship matters because zero trust touches IT, security, and business process owners simultaneously.
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