{"type":"post","id":"build-composable-interoperable-multi-agent-systems-with-a2a-379ed1","slug":"build-composable-interoperable-multi-agent-systems-with-a2a-379ed1","title":"Build composable, interoperable multi-agent systems with A2A on AWS","description":"AWS published a deployable reference architecture for agents in separate organizations to collaborate through A2A despite using different frameworks.","retrieval_nugget":"AWS published a deployable reference architecture for agents in separate organizations to collaborate through A2A despite using different frameworks. Its LangChain-to-Strands example combines Agent Card discovery, bidirectional OAuth calls, and separate AWS accounts, offering teams a concrete pattern for composing external agent capabilities without sharing internals or secrets.","published_at":"2026-11-12","updated_at":"2026-11-12","record_date":"2026-11-12","date_kind":"published_at","topics":["anthropic","claude"],"entities":["AWS","A2A","LangChain","Strands Agents","Amazon Bedrock AgentCore","Amazon Cognito","Amazon Bedrock","Anthropic Claude Sonnet 4.6"],"related_patterns":["agent-protocols-become-interoperability-layer"],"novelty_label":"new_fact","what_changed":"AWS presents a tutorial for building interoperable multi-agent systems with A2A, adding a distinct agent-to-agent implementation pattern to its existing AgentCore guidance.","prior_refs":["https://newruntime.com/posts/build-a-multi-account-ai-agent-with-agentcore-b891d7/","https://newruntime.com/posts/scaling-cloud-migrations-with-agentic-ai-on-amazon-22cc90/"],"source_url":"https://aws.amazon.com/blogs/machine-learning/build-composable-interoperable-multi-agent-systems-with-a2a-on-aws","source_urls":["https://aws.amazon.com/blogs/machine-learning/build-composable-interoperable-multi-agent-systems-with-a2a-on-aws"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:build-composable-interoperable-multi-agent-systems-with-a2a-379ed1","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/build-composable-interoperable-multi-agent-systems-with-a2a-379ed1/","markdown":"https://newruntime.com/posts/build-composable-interoperable-multi-agent-systems-with-a2a-379ed1.md","json":"https://newruntime.com/posts/build-composable-interoperable-multi-agent-systems-with-a2a-379ed1.json"},"markdown_url":"https://newruntime.com/posts/build-composable-interoperable-multi-agent-systems-with-a2a-379ed1.md","next_reads":[{"type":"topic","path":"/topics/anthropic/","url":"https://newruntime.com/topics/anthropic/","title":"Anthropic","reason":"Explore the anthropic topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/anthropic.md","json_url":"https://newruntime.com/topics/anthropic.json"},{"type":"topic","path":"/topics/claude/","url":"https://newruntime.com/topics/claude/","title":"Claude","reason":"Explore the claude topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/claude.md","json_url":"https://newruntime.com/topics/claude.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/sources/","url":"https://newruntime.com/sources/","title":"Sources","reason":"See the original sources this archive cites.","media_type":"text/html"}]}