How to use serverless containers with AWS Fargate

· Category: Cloud Computing

Short answer

AWS Fargate is a serverless compute engine for containers that eliminates the need to provision and manage EC2 instances.

Steps

  1. Create an ECS cluster with Fargate launch type.
  2. Define a task definition with container image, CPU, and memory.
  3. Run the task or create a Fargate service.
  4. Configure networking (VPC, subnets, security groups).
  5. Monitor with CloudWatch and X-Ray.

Tips

  • Fargate Spot reduces costs for fault-tolerant workloads.
  • Use sidecar containers for logging and observability.
  • Fargate automatically patches the underlying infrastructure.

Common issues

  • Task size limits: choose appropriate CPU and memory combinations.
  • Cold starts: provisioning new tasks takes slightly longer than on EC2.