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Yusuf Adeyemo for AWS Community Builders

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Introduction to ECS (Elastic Container Service)

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With the recent rise in usage of microservices, people have moved to Microservices to build their infrastructure and adopt it for deploying their applications and their overall DevOps strategy has changed significantly. Choosing microservice architecture also introduced another concern in managing these services, and as a result, the demand and the need for Container orchestration surged drastically over the years. AWS Elastic container Service (ECS) is a cloud service that makes it easier to deploy and manage your container applications.

ECS (Elastic Container Service) is a fully managed container orchestration service offered by Amazon Web Services (AWS). It allows teams to easily deploy, run, and scale containerized applications on AWS.

ECS provides a range of features to help teams build, deploy, and manage containerized applications at scale. It integrates with other AWS services, such as Amazon ECR (Elastic Container Registry) and Amazon EC2 (Elastic Compute Cloud), to provide a complete container orchestration solution.

ECS is a popular choice for teams looking to leverage the power and scalability of AWS to run their containerized applications. It's simple to use and allows teams to focus on building and deploying their applications, rather than worrying about the underlying infrastructure.

Whether you're just getting started with containers or are an experienced developer looking to deploy your applications on AWS, ECS is a powerful tool that can help you achieve your goals.
Why ECS?

Here are several key benefits of Amazon ECS:

Simplicity If you need an AWS-opinionated solution running containers at scale, think ECS. It reduces the time it takes to build, deploy, or migrate their containerized applications.

Managed availability ECS is responsible for maintaining application availability and helps you scale up or down as needed to ensure capacity demands are met.

Scheduling capabilities - If you need a way to schedule services, applications, and batch processes, ECS is a great choice for you.

Launch types

There are three main ECS launch types: Fargate, EC2, and AWS Fargate Spot. Each of these launch types has its own unique characteristics and trade-offs, making it important for teams to choose the right one for their specific needs.

Fargate is a serverless launch type that allows teams to run containers without the need to manage the underlying EC2 instances. This makes it easy for teams to get started with ECS and eliminates the need to worry about infrastructure management.

EC2 is a traditional launch type that allows teams to run containers on their own EC2 instances. This gives teams more control over the underlying infrastructure and requires them to manage the EC2 instances themselves.

AWS Fargate Spot is a cost-effective launch type that allows teams to run containers on spare capacity in the AWS Fargate fleet. It offers significant cost savings, but also comes with the risk of workloads being interrupted if the spare capacity is needed elsewhere.

Components of the ECS Service

ECS has several components that work together to enable teams to run and manage their containerized applications. Here are some of the key components of ECS:

ECS Clusters: An ECS cluster is a logical grouping of tasks or services. It allows teams to organize and manage their containerized applications and resources.

ECS Tasks: An ECS task is a running container that is managed by ECS. Tasks are defined by a task definition, which specifies the container image and other runtime configuration options.

ECS Services: An ECS service is a long-running task or group of tasks that are deployed to an ECS cluster. Services ensure that the desired number of tasks are running and healthy at all times, and they can automatically scale tasks up or down based on demand.

ECS Task Definitions: A task definition is a blueprint that describes how an ECS task should be run. It specifies the container image, CPU and memory requirements, and other runtime configuration options.

ECS Container Instances: An ECS container instance is a physical or virtual machine that is registered to an ECS cluster. Container instances run ECS tasks and services, and they can be launched in Amazon EC2 or run on-premises using the ECS-optimized AMI.


ECS is a powerful tool for managing and running containerized applications at scale. Its various components work together to enable teams to deploy and manage their applications with ease, without the need to worry about infrastructure management.

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