Intro to AWS ECR with AWS ECS

AWS ECR (Amazon Elastic Container Registry) is a fully-managed container registry service provided by Amazon Web Services. It allows you to store, manage, and deploy Docker container images. ECR is tightly integrated with other AWS services, such as Amazon Elastic Container Service (ECS) and Amazon Elastic Kubernetes Service (EKS), making it easier to build and deploy containerized applications on AWS.

Here are some key features and functionalities of AWS ECR:

  1. Secure and private registry: ECR provides secure storage for container images, allowing you to control access to your images through AWS Identity and Access Management (IAM) policies. You can also encrypt your images at rest using AWS Key Management Service (KMS) encryption.
  2. Scalability and availability: ECR is designed to be highly scalable and can handle large numbers of concurrent image pulls and pushes. It also provides high availability and durability, ensuring your container images are always accessible.
  3. Integration with AWS services: ECR seamlessly integrates with other AWS services, such as ECS and EKS. This allows you to easily deploy containerized applications using these services and use ECR as the registry for storing and managing your container images.
  4. Lifecycle policies: ECR allows you to define lifecycle policies to manage your container images. You can set rules to automatically expire or delete images based on criteria such as image age or number of images.
  5. Image vulnerability scanning: ECR provides an integrated vulnerability scanning feature called Amazon ECR Image Scanning. This allows you to identify security vulnerabilities and get recommendations for remediation in your container images.
  6. Registry permissions: ECR allows you to set fine-grained permissions using IAM policies to control who can access and perform actions on your container images.

AWS ECR (Amazon Elastic Container Registry) and ECS (Amazon Elastic Container Service) are two complementary services provided by Amazon Web Services for containerized applications. While they are related, they serve different purposes in the container ecosystem.


  1. ECR: ECR is a fully-managed container registry service. It provides a secure and private registry for storing, managing, and deploying container images. ECR is primarily focused on image management, ensuring that container images are securely stored, accessible, and can be pulled for deployment. It integrates well with other AWS services such as ECS and EKS.
  2. ECS: ECS is a container orchestration service that allows you to run and manage containers at scale. It provides a fully-managed environment to deploy and run containerized applications. ECS allows you to define and manage the infrastructure resources required to run containers, including managing container instances, task definitions, scheduling, scaling, and monitoring.

In summary, the main difference between ECR and ECS is their primary focus and functionality:

  • ECR: ECR is focused on container image management, providing a secure and private registry for storing and deploying container images. It is primarily used to manage the lifecycle of container images and their availability for deployment.
  • ECS: ECS is focused on container orchestration, providing a fully-managed environment to run and manage containers. It handles the deployment and scaling of containers, manages the underlying infrastructure, and ensures high availability and scalability of containerized applications.

To use ECS effectively, you would typically store your container images in ECR and then use ECS to deploy and manage those images as tasks or services in a cluster. This way, ECR and ECS work together to provide a seamless end-to-end solution for building and running containerized applications on AWS.

AWS ECR simplifies the process of managing container images by providing a reliable and scalable registry service with integration into the AWS ecosystem. It is commonly used by organizations deploying containerized applications on AWS to store, manage, and deploy their container images.


Leave a Reply

Your email address will not be published. Required fields are marked *