AWS Launches A2A Protocol for Interoperable Multi-Agent Systems
AWS has introduced support for the Agent-to-Agent (A2A) protocol on its platform, enabling composable, interoperable multi-agent systems where specialised agents can communicate and delegate tasks across organisational and tooling boundaries. For defenders, this closes a meaningful visibility gap by establishing a standardised communication layer between agents — creating a consistent surface for logging, policy enforcement, and trust verification rather than a proliferation of bespoke, opaque agent integrations. Residual gaps remain around cross-vendor trust federation maturity, the absence of native anomaly detection on A2A message flows, and the operational discipline required to govern agent permission scopes at scale.