Identity, security & deployment. Agent identity and authorization (e.g., Microsoft Entra Agent ID, Okta / Auth0 for AI Agents, On-Behalf-Of token exchange), RBAC/SSO, sandboxed execution (e.g., E2B, Modal, Firecracker microVM), and private/secure LLM deployment patterns (HIPAA-aligned, auditable, on-prem/VPC; cf. the GPT4DFCI pattern).