# Designing agentic workflows on AWS
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Each pattern in this guide can be built using AWS services. Amazon Bedrock agents provide orchestration, data access, and interaction channels.


| 
| 
| **Component** | **AWS service** | **Purpose** | 
| --- |--- |--- |
| LLM reasoning | Amazon Bedrock | Agent logic, planning, tool use | 
| Tool execution | AWS Lambda, Amazon ECS, Amazon SageMaker | Host external tools for agents | 
| Memory and RAG | Amazon Bedrock knowledge base, Amazon S3, OpenSearch | Persistent and semantic memory | 
| Orchestration | AWS Step Functions | Multistep task and agent coordination | 
| Event routing | Amazon EventBridge, Amazon SQS | Decoupled interagent messaging | 
| User interface | Amazon API Gateway, AWS AppSync, SDK | Entry points for applications or systems | 
| Monitoring | Amazon CloudWatch, AWS X-Ray, AWS Distro for OpenTelemetry | Observability and agent introspection |