AWS AgentCore Cloud Migration: Multi-Agent Orchestration for Infrastructure-as-Code Generation

AWS Professional Services released data showcasing a multi-agent system that significantly shortens infrastructure-as-code (IaC) development time. This system, which uses Amazon Bedrock's AgentCore primitives, streamlines the process by chaining four specialized agents through a workflow that spans discovery, IaC generation, governance, and operations.

The components work together without circular dependencies, thanks to AWS's use of state management primitives like a migration manifest stored in DynamoDB. Each agent handles distinct tasks—Discovery Agent scans the existing infrastructure to build dependency graphs and identifies candidates for migration; IaC Generation Agent converts these resources into Terraform or CloudFormation templates; Portfolio Governance Agent validates these templates against organizational policies, cost budgets, and security baselines; and finally, the Post-Migration Operations Agent monitors the deployed resources, checks for drift, and performs remediation.

The governance agent acts as a critical checkpoint, potentially halting the workflow if it identifies any issues with the generated templates. If the generated IaC templates fail governance checks, the governance agent reverts the workflow's state, prompting the IaC generation agent to regenerate the templates based on feedback. This design ensures that the deployment of invalid resources is prevented, and the workflow only proceeds after all validation checks have been successfully passed.

AWS employs IAM roles to enforce the principle of least privilege between agents. Each agent is restricted to specific read and write access rights, ensuring that actions like infrastructure deployment are only allowed by the operations agent, while the discovery and IaC generation agents operate in a read-only or generate-only mode. This setup minimizes the potential blast radius if an agent encounters issues during its operations.

Observability is maintained through AWS's CloudWatch Logs Insights and X-Ray, providing structured logs for each agent's activities. These logs detail important information such as the project ID, agent name, stage of the workflow, status, duration, and output URIs. In case of handoff failures—where an agent fails to update the migration manifest within the expected timeframe—the system logs these events, allowing for quick identification and resolution of issues.