Which feature does AWS provide to manage containerized applications effectively?

Amazon ECS (Elastic Container Service) is the correct answer because it is specifically designed for managing containerized applications at scale. ECS allows users to easily run, stop, and manage Docker containers on a cluster of servers. It integrates deeply with other AWS services, which enhances its ability to deploy, manage, and scale containerized applications effectively.

ECS offers features such as service discovery, load balancing, and scaling capabilities, making it a comprehensive solution for orchestrating containers. It also supports both EC2 Launch Type, where users run containers on Amazon EC2 instances, and Fargate Launch Type, which allows users to run containers without managing the underlying EC2 instances. This flexibility in deployment options and the ability to integrate with other AWS services streamline operations and improve application performance.

In contrast, Elastic Load Balancing primarily distributes incoming application traffic across multiple targets, AWS Lambda is a serverless compute service that runs code in response to events, and AWS S3 is an object storage service. While these services can complement containerized applications, they do not provide the direct management capabilities that ECS offers for running and orchestrating containers.