Google Gemini Enterprise Agent Platform Security Architecture: The Paradigm Shift from Model Marketplace to Agent OS
Google completed the paradigm shift from "model marketplace" to "Agent operating system" through the Gemini Enterprise Agent Platform at I/O 2026. Its security philosophy is Platform-Native Security—all Agents must run within Google Cloud boundaries, with security built into the control plane rather than bolted on. Five security components are dissected: Agent Identity, Agent Registry, Agent Gateway, Managed Agents, and CodeMender. Deep integration delivers management efficiency at the cost of lock-in effects and absence of cross-platform governance.