Which AWS service should be used to refactor this architecture?

Explanations:

AWS Lambda is a serverless compute service that allows you to run code in response to events. It doesn’t provide a unified interface for managing multiple services or connections between services and consumers.

AWS X-Ray is a service for monitoring and debugging applications. It helps trace requests and analyze the performance of the application but does not provide a centralized management interface for services and consumers.

Amazon SQS is a message queue service used for decoupling microservices, but it does not serve as an interface for managing consumer-service connections. It handles message-based communication rather than centralized service management.

Amazon API Gateway is a fully managed service that allows you to create, publish, maintain, monitor, and secure APIs for applications. It acts as a single interface to manage multiple services, providing a scalable and easy way to connect consumers with services.