Runtime & Memory
AgentCore Runtime runs each agent session inside an isolated microVM, providing per-session process isolation, auto-scaling, and built-in authentication — all from a single container image. Memory extends the runtime with managed storage that lives outside the microVM so agents accumulate knowledge across sessions. This section also covers the A2A protocol for agent-to-agent communication and the Prompt Registry for versioned prompt management.
| Page | What it covers |
|---|---|
| Runtime | AgentCore Runtime internals — /invocations + /ping contract, AgentCoreApp, GenericHandler, OTel telemetry flush, streaming |
| Memory | Short-term event store + long-term strategy-extracted semantic memory, wiring, branching |
| A2A Communication | Agent-to-agent protocol — agent cards, coordinator/specialist pattern, M2M auth, port convention |
| Prompt Registry | Versioned prompt management — S3 + DynamoDB storage, lifecycle, mode-gated resolution |