2.2. Developing with Containers on AWS

Developing with containers on AWS adheres to the First Principle of packaging applications and their dependencies into isolated, portable units. This enables developers to build and deploy applications consistently across different environments, streamlining the development process and ensuring runtime predictability. The fundamental 'why' is to simplify application delivery, improve consistency, and leverage the power of container orchestration.

This section explores the core AWS services that enable containerized application development and deployment. You'll learn about storing and managing Docker images with Amazon Elastic Container Registry (ECR) and the basic concepts of deploying containers using Amazon Elastic Container Service (ECS) or AWS Fargate.

The focus is on comprehending how to prepare and deploy your containerized applications on AWS, which is crucial for the DVA-C02 exam.

Scenario: You have an application packaged as a Docker container image that needs to be stored, managed, and then deployed to a scalable runtime environment on AWS.

Reflection Question: How does packaging your application into a Docker container and using AWS container services (like ECR for storage and ECS or Fargate for deployment) fundamentally enhance consistency, portability, and scalability for your application compared to traditional VM-based deployments?