The correct service for the described needs is AWS X-Ray. This service is specifically designed to help developers analyze and debug both production and distributed applications, such as those built with a microservices architecture. It provides an end-to-end view of requests as they journey through your application, and it constructs a detailed service map that visualizes the application’s architecture. While services like CloudTrail and VPC Flow Logs are useful for their own specific use cases (API activity monitoring and network traffic logging, respectively), they do not offer the dedicated tracing or application topology visualization capabilities that AWS X-Ray provides. Similarly, Amazon CloudWatch focuses primarily on monitoring operational metrics and logs, and it doesn't offer the same comprehensive tracing or service mapping that is native to AWS X-Ray.