Google ADK: A Layered Framework for Building and Deploying AI Agents

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Google Agent Development Kit (ADK) is an open framework designed to help developers build, test, and deploy AI-based agent applications, ranging from simple bots to complex multi-agent systems. Its architecture is organized into distinct layers, including user interfaces, an ADK Runtime and Runner, an agent system, and foundation components covering models, knowledge, observability, and deployment. The user interface layer supports multiple interaction channels such as CLI, web UI, API endpoints, and custom frontends, keeping agent logic independent of the user experience. At the core, the ADK Runtime and Runner manage execution through an event loop and orchestration engine that coordinates which agents act, in what order, and whether tasks run sequentially or in parallel. This modular design allows the same agent system to serve diverse channels and business workflows without altering its internal behavior.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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