A2A vs MCP in 2026: The Two Protocols Powering the AI Agent Revolution
If you have been building with AI agents in 2026, you have probably run into two acronyms that keep showing up: MCP and A2A. They sound similar. They both involve agents talking to something. But they solve fundamentally different problems — and understanding the difference is the difference between building a toy demo and a production AI system that actually scales. This guide cuts through the jargon. You will learn what each protocol does, which platforms support them today, and — most importantly — which one you should care about right now depending on your use case. — What Is