Teleport Unified Identity Layer provides infrastructure access management by consolidating identities for users, machines, workloads, devices, and AI agents into a single layer. The platform implements cryptographic, phishing-resistant identities backed by physical-world roots of trust including biometrics for humans, secure enclaves (TPM) for machines, and hardware security modules (HSM) for workloads. The system authenticates users without passwords by leveraging biometric devices and can function as a security layer on top of existing identity providers or provide its own SSO capabilities. For machines and workloads, it issues and governs identities for CI/CD automation systems, service accounts, microservices, and AI agents using HSM and KMS. Device identities are assigned to TPM-equipped client devices including laptops, workstations, and YubiKeys. The platform implements zero trust access control through secretless authentication and ephemeral privileges, eliminating static credentials and reducing attack surfaces. All identities enrolled in Teleport create a unified control plane for access management across infrastructure resources. The platform addresses the security challenges of fragmented identities and credential proliferation by providing centralized identity governance for modern infrastructure environments including AI implementations.