AWS 'AgentCore runtime' Revamp: Cold Start Reduced from Max 30 Seconds to ~2 Seconds, AI Agents Move to Always-On

What you will learn in this article・On September 18, 2026, AWS announced the revamp of the Amazon Bedrock AgentCore runtime in its official blog post, 'The new AgentCore runtime: elastic, optimized, ...

Published: 2026-09-20