One of the highlights revealed during the Google Cloud NEXT 2025 was the Agent Development Kit (ADK) , a new open-source framework designed to streamline the creation and deployment of intelligent, autonomous AI agents and advanced multi-agent systems easier. As the AI landscape evolves beyond single-purpose models, building coordinated teams of agents presents new challenges, which ADK aims to solve by providing a full-stack, end-to-end development solution. The framework is the same one that powers agents within Google's own products, including Agentspace and the Google Customer Engagement Suite (CES). By open-sourcing ADK, Google intends to empower developers with powerful and flexible tools for building in the rapidly changing agentic AI space. ADK is built with flexibility in mind, supporting different models and deployment environments, and designed to make agent development feel similar to traditional software development. Core Pillars Guiding Development ADK ...