Architecture patterns for fast session startup on Amazon Bedrock AgentCore runtime | Amazon Web Services
Agents today review code, process claims, and run unattended for hours. Many also sit behind interactive experiences where a person waits for the first response. Amazon Bedrock AgentCore runtime gives these agents a fully managed, serverless environment: each session runs in its own isolated microVM, the platform scales to zero when there’s no work, and you only pay for the resources your sessions consume.
AgentCore runtime with platformVersion set to “V2” changes how sessions start. Instead of initializing your container for every session, it prepares your environment once, snapshots it, and restores that snapshot for each new session. Session start times are faster and more consistent. V2 also reclaims memory your sessions don’t use, so your bill tracks what your agent uses.
For most agents, switching to V2 is all it takes. Some agents need restructuring to get the full benefit, and for chat and voice experiences even 2 seconds...
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