First, what is ECR?

• Docker hub but on AWS and private
• Fully-managed container image registry
• Works seamlessly with ECS, EKS, fargate
• Compress, encrypt, control access

Then what’s ECS?

• Deploy docker images from ECR
• “Run anywhere”
• Use docker imgs in task definitions to launch containers as part of tasks in clusters

What are task definitions?

• Task definitions use docker to launch containers on the container instances in clusters

Workflow:

1. Create container image
2. Push to ECR / Docker Hub
3. Task definition: Parameters for the app
4. Container image is pulled from registry