{"type":"post","id":"aws-makes-next-generation-agentcore-runtime-the-default-869851","slug":"aws-makes-next-generation-agentcore-runtime-the-default-869851","title":"AWS makes next-generation AgentCore runtime the default for new Bedrock AgentCore runtimes","description":"AWS says new Amazon Bedrock AgentCore runtimes now use its next-generation runtime by default in 19 regions.","retrieval_nugget":"AWS says new Amazon Bedrock AgentCore runtimes now use its next-generation runtime by default in 19 regions. The update restores sessions from initialized-agent snapshots, scales idle agents to zero, and reports much faster starts for a 2 GB image. For teams hosting agents on AgentCore, the change affects startup behavior, resource ceilings, and migration choices.","published_at":"2026-11-15","updated_at":"2026-11-15","record_date":"2026-11-15","date_kind":"published_at","topics":[],"entities":["Amazon Web Services","Amazon Bedrock AgentCore","AgentCore Runtime","Firecracker"],"related_patterns":["agent-security-moves-to-runtime-boundaries"],"novelty_label":"new_fact","source_url":"https://aws.amazon.com/about-aws/whats-new/2026/11/new-agentcore-runtime-default","source_urls":["https://aws.amazon.com/about-aws/whats-new/2026/11/new-agentcore-runtime-default"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:aws-makes-next-generation-agentcore-runtime-the-default-869851","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/aws-makes-next-generation-agentcore-runtime-the-default-869851/","markdown":"https://newruntime.com/posts/aws-makes-next-generation-agentcore-runtime-the-default-869851.md","json":"https://newruntime.com/posts/aws-makes-next-generation-agentcore-runtime-the-default-869851.json"},"markdown_url":"https://newruntime.com/posts/aws-makes-next-generation-agentcore-runtime-the-default-869851.md","next_reads":[{"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"}]}