Bedrock AgentCore Runtime: Multi-Model Migration From ECS to Managed Orchestration

AWS published a guide on migrating a production agent with three models (triage, diagnostics, treatment plan) from self-managed ECS containers to the managed Bedrock AgentCore runtime. JSON/YAML configuration replaces orchestration, state storage and vector search, but removes control over the execution environment and metrics.

• Agent coordinates three models: triage, differential diagnosis and treatment plan
• AgentCore handles runtime, state, model routing and CloudWatch logs
• Vector search is configured via a knowledge base connector with topK 5 and threshold 0.7
• Drawbacks: no access to container metrics and custom state retention policies