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What is Amazon ECS(Elastic Container Service)?

Amazon ECS

Condition for Amazon ECS(Elastic Container Service)

  •  Amazon ECS (Elastic Container Service) is a fully managed container orchestration service from AWS.
     It lets you run, manage, and scale Docker containers on:
      EC2 instances (your own servers)
      AWS Fargate (serverless containers)
     ECS works similarly to Kubernetes, but it is AWS-native and simpler to manage.
     ECS = AWS-managed Docker container orchestration

Why Use Amazon ECS?

  •  Use ECS when you want to run containers on AWS without managing Kubernetes.
     ECS is ideal for:
     Microservices
     Batch processing
     Web applications
     APIs
     Long-running containerized apps
     CI/CD deployments
     Highly scalable container workloads

Advantages of Amazon ECS

  •  Fully Managed and AWS-Native
     No need to install or maintain an orchestration system.
     ECS integrates perfectly with:
     IAM
     CloudWatch
     ECR
     VPC
     ALB / NLB
     Secrets Manager
     This makes deployment simpler compared to Kubernetes.
  •  Two Launch Types
     You can run ECS workloads in two ways:
     ECS on EC2
     You manage the EC2 servers (cheaper but requires ops).
     ECS on Fargate (serverless)
     No servers to manage → AWS handles everything.
  •  Scalable and High Availability
     ECS automatically handles:
     scaling containers
     restarting failed tasks
     monitoring health checks
     distributing containers across AZs
  •  Simple Compared to Kubernetes
     ECS is:
     easier to configure
     easier to maintain
     less complex
     deeply integrated with AWS services
     Perfect for teams not wanting Kubernetes overhead.
  •  Secure by Default
     Uses IAM roles for:
     tasks
     services
     containers
     Very fine-grained access control.
  •  Low Cost
     You pay only for:
     EC2 instances you run
     OR
     Fargate vCPU and memory
     No cluster management fees.

Disadvantages of Amazon ECS

  •  AWS Vendor Lock-in
     ECS works only inside AWS.
     Unlike Kubernetes, ECS cannot be migrated easily to:
     Google Cloud
     Azure
     On-premise
  •  Not Multi-Cloud
     If your architecture requires multi-cloud or hybrid cloud,
     Kubernetes (EKS/GKE/AKS) is more suitable.
  •  Less Flexible Than Kubernetes
     Kubernetes offers more:
     customization
     tooling
     portability
     community support
     ECS is simpler but less feature-rich.
  •  Fargate Can Be Expensive
     If you use Fargate for high CPU/memory tasks, cost increases.
  •  Manual EC2 Capacity Management (If Using EC2 Mode)
     You must handle:
     scaling EC2 nodes
     patching
     AMI updates
     auto-scaling groups
     This adds operational overhead.

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