Architecture patterns for fast session startup on Amazon Bedrock AgentCore runtime

Amazon Bedrock AgentCore runtime's platformVersion "V2" prepares a container once, snapshots the microVM, and restores it for each new session, making session starts faster and more consistent. V2 also reclaims unused session memory so billing tracks actual usage, and AgentCore runtime now supports build hooks. The post explains how V2 starts sessions, how to measure session start time, and four patterns for keeping work off the first request.