The new AgentCore runtime: Elastic, optimized, and consistently fast starts
How-To How to actually use this
What changed: Amazon Bedrock AgentCore now has a new runtime that reclaims memory when sessions end and maintains consistent cold start speeds regardless of image size or concurrency.
How to use it:
- Migrate your existing AgentCore agent to the new runtime via the Bedrock console or API.
- Configure your agent's session timeout to allow the runtime to reclaim memory after use.
- Deploy agent images of any size and observe consistent start times under varying concurrency.
- Monitor memory usage and cold start metrics in CloudWatch to confirm optimization.
Good for: teams building production agents on AWS Bedrock.
Today we are announcing the new AgentCore runtime, a capability of Amazon Bedrock AgentCore built for the speed, flexibility, and cost efficiency that production agents demand. It reclaims memory as sessions release it and delivers consistent cold starts regardless of image size or concurrency.
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