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Model Context Protocol (MCP) vs. Agent2Agent (A2A): which protocol do you need?

calendar_today July 22, 2026 person Jeff Mills domain redis

Somewhere around your third agent, someone in a design review asks, “Shouldn’t we be using A2A for this?” It’s a fair question that most teams can’t answer well, because the two big agent protocols keep getting lumped together when they solve differen…

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