# AWS demonstrates cross‑org agent integration using A2A protocol

> AWS blog walks through a reference setup that lets an enterprise LangChain orchestrator talk to a SaaS compliance agent across AWS accounts via the open A2A protocol.

Oossa · 2026-11-12 · https://oossa.com/en/aws-demonstrates-cross-org-agent-integration-using-a2a-protocol

AWS published a step‑by‑step guide showing how an enterprise can connect its LangChain orchestrator to a SaaS compliance agent using the Agent‑to‑Agent (A2A) protocol. The two agents run in separate AWS accounts, authenticate with Amazon Cognito and exchange tasks over HTTPS without sharing secrets. The demo uses Anthropic Claude Sonnet 4.6 for reasoning and Amazon Nova Lite for metadata lookups, and the whole flow is deployed with three Jupyter notebooks.

## The facts

- Blog post published on 2026-11-12 ("PUBLISHED: Thu Nov 12 2026")
- Deployment uses three notebooks: ~3 min, ~5 min and ~20 min each

## Why it matters

Enterprises can add third‑party AI agents without custom code, reducing integration effort and keeping each side’s models and tools private.

## Sources & references

1. [Build composable, interoperable multi-agent systems with A2A on AWS](https://aws.amazon.com/blogs/machine-learning/build-composable-interoperable-multi-agent-systems-with-a2a-on-aws/) – AWS, 2026-11-12

Last updated: 2026-11-12