Which service allows developers to store and manage Docker container images?

The correct answer is Amazon ECR, which stands for Amazon Elastic Container Registry. This service is specifically designed for developers to store, manage, and deploy Docker container images in a highly scalable and secure manner. ECR simplifies the process of managing container images by providing a fully-managed environment where images can be pushed and pulled efficiently.

Amazon ECR integrates seamlessly with Amazon ECS (Elastic Container Service) and Amazon EKS (Elastic Kubernetes Service), enabling developers to easily deploy their containerized applications. It provides features such as image versioning, vulnerability scanning, and access control, making it an optimal choice for maintaining Docker images in a cloud environment.

Other options such as Amazon EC2, AWS Lambda, and Amazon Lightsail serve different purposes. EC2 is primarily focused on providing virtual servers for running applications instead of managing container images. AWS Lambda is designed for serverless computing, allowing developers to run code in response to events without managing server infrastructure, but it does not directly handle container image storage. Lastly, Amazon Lightsail is a simplified service for deploying virtual private servers and does not focus specifically on container image management.