"A2A, short for agent-to-agent, is an open, vendor-neutral protocol that allows autonomous AI agents to communicate, coordinate, and delegate work to one another. Most agents today are built as isolated systems, each with its own framework, API conventions, and assumptions. A2A defines a shared language and handshake process so they can interoperate. The goal isn't to reinvent what existing standards do, but to fill the gap between how agents perform tasks and how they collaborate on them."
"By creating a shared foundation for discovery, messaging, and task delegation, A2A enables agents from different vendors and developers to work together on multi-step workflows without custom middleware. That interoperability is what gives the protocol its significance: rather than building one monolithic super-agent, organizations can assemble a network of specialized ones that understand each other out of the box-and can communicate with external agents as well."
A2A provides a vendor-neutral protocol that lets autonomous AI agents communicate, coordinate, and delegate tasks across diverse implementations. The protocol specifies a shared language and handshake process to enable discovery, messaging, and task delegation without brittle custom integrations. Google released the open-source specification in April 2025 to promote interoperability across agent ecosystems and avoid monolithic designs. A2A enables organizations to assemble networks of specialized agents that interoperate out of the box, allowing enterprise-grade, multi-step workflows to be executed by teams of focused agents rather than a single super-agent.
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