Which service is an AWS managed container image registry that is secure, scalable, and reliable?

• A. Amazon ECS
• B. AWS Lambda
• C. Amazon Elastic Container Registry (Amazon ECR)
• D. Amazon Lightsail

Answer: (C)

The service being described is Amazon Elastic Container Registry (ECR). It’s AWS’s fully managed container image registry, designed specifically to store, manage, and deploy Docker images securely and at scale. Access is controlled via IAM, so you can enforce strict permissions, and images can be encrypted at rest with AWS KMS and transmitted securely in transit. ECR automatically scales to handle large catalogs and high request rates, and it offers regional availability with optional cross-region replication for reliability. It integrates tightly with container orchestration and runtime services like ECS, EKS, and Fargate, making it the natural choice for a secure, scalable, and reliable registry. The other options are compute or hosting services, not registries.