In April 2025, Google introduced the Agent-to-Agent (A2A) protocol, a game-changing step in the evolution of AI systems. A2A is an open-source standard that enables AI agents to communicate, collaborate, and complete tasks together, regardless of their backend architecture or platform.
Built with contributions from over 50 partners—including Salesforce, Atlassian, LangChain, and others—A2A seeks to standardize how agents interact in the same way HTTP standardized web communication.
What Is the A2A Protocol?
The A2A protocol defines a method for how agents:
- Discover each other
- Share context or environment
- Delegate and negotiate tasks
- Respond or pass results to other agents
This interoperability allows for complex multi-agent workflows, where specialized agents can collaborate on larger goals without being built on the same infrastructure.
Why It Matters
The future of AI is not just one smart assistant. It’s dozens—or hundreds—of interoperating agents, each with their own strengths, working together across platforms and organizations.
Until now, most agent frameworks were siloed. A2A breaks down these barriers by encouraging:
- Decentralized agent ecosystems
- Vendor-agnostic collaboration
- Faster innovation through composability
How Builders Can Use It
If you're working with AI agents (LangChain, AutoGen, or custom frameworks), this protocol will eventually allow you to:
- Plug your agents into larger networks
- Build SaaS tools that integrate with third-party agents
- Create automated systems that are resilient and modular
It’s early days, but the foundations are here.
Final Thoughts
Just like REST and GraphQL transformed web development, A2A has the potential to reshape how we build intelligent systems. At Architct, we’re keeping a close eye on this evolution—and soon, we’ll be sharing more updates as they come.