Which AWS service should a company use to decouple large monolithic applications into smaller microservices components?

Explanations:

AWS Direct Connect is a network service that provides a dedicated connection from your on-premises data center to AWS. It is not designed for decoupling applications into microservices.

Amazon Lightsail is a simplified cloud platform that offers virtual private servers and is intended for small applications and websites. It does not specifically address the need for microservices architecture.

Amazon Simple Queue Service (Amazon SQS) is a fully managed message queuing service that enables decoupling of microservices by allowing them to communicate through messages without requiring direct connections. This makes it suitable for breaking down monolithic applications into smaller, independent services.

Amazon CloudWatch is a monitoring and observability service that provides data and insights into AWS resources and applications. While it is essential for monitoring microservices, it does not facilitate their decoupling.