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What's the Difference Between Amazon ECS and AWS Lambda?

Compare Amazon ECS and AWS Lambda side by side — features, pricing, and ideal use cases to help you choose the right product.

Compare side-by-side

Comparisons
Amazon ECS
AWS Lambda
Category

Containers, Orchestration

Serverless, Functions

Description

Fully managed AWS native container orchestration service

Service for running code without thinking about servers or clusters

Best for
  • Microservices
  • Batch jobs
  • Application migration
  • Hybrid deployments
  • Event-driven processing
  • API backends
  • Data transformation
  • Real-time file processing
Key features
  • AWS Fargate integration
  • Service auto scaling
  • Service mesh
  • Capacity providers
  • Spot instances
  • Auto scaling
  • Sub-second metering
  • Multiple runtimes
  • Container image support
  • Provisioned concurrency
Pricing model

No additional charge for EC2 launch type; Fargate pricing for Fargate launch type

Pay-per-request + compute duration

Free tier

No

Yes

Expert take

“ECS is the fastest path to running containers on AWS. Deep integration with IAM, CloudWatch, and VPC means less glue code, and flexible compute options (EC2, Fargate, or ECS Managed Instances) let you match infrastructure to your workload without managing orchestration overhead.”
— Aditya Ramakrishnan, AWS Product Marketing Manager

“Lambda is best used for single-function microservices that are small, fast, and easy to maintain. For workloads with unpredictable traffic, short duration, or infrequent invocations, Lambda eliminates the need to manage infrastructure entirely.”
— Didier Durand, re:Post Top Contributor [profile]

Product page

When to use Amazon ECS or AWS Lambda

Use Amazon ECS when:

  • Microservices
  • Batch jobs
  • Application migration
  • Hybrid deployments

Learn more about Amazon ECS »

Use AWS Lambda when:

  • Event-driven processing
  • API backends
  • Data transformation
  • Real-time file processing

Learn more about AWS Lambda »

AWS product comparisons

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