The Agent Development Kit (ADK) is a new open-source framework from Google designed to simplify the development and deployment of AI agents and multi-agent systems .... It offers a flexible and modular structure that integrates tightly with the Google ecosystem and Gemini models . ADK provides developers with tools for orchestration, tool usage, evaluation, and deployment, enabling the creation of complex agent architectures .... It particularly excels in building collaborative multi-agent systems with features like hierarchical structures and intelligent delegation .... While flexible, ADK is optimised for the Google Cloud environment, offering seamless integration with services like Vertex AI