Choose Amazon ECS if you want the simplest way to run containers on AWS: it's fully managed, versionless and AWS adds no extra charge for the orchestration itself. Choose Amazon EKS if you want Kubernetes, either because your team already knows it or you want workloads that move between clouds and on-premises. With EKS, Kubernetes version upgrades become part of your routine.
I read AWS's ECS and EKS product pages, FAQs and plans pages, plus AWS's own decision guide for choosing a container service. AWS sells both, so its pages are a fair guide to when each fits.
ECS and EKS side by side
| Amazon ECS | Amazon EKS | |
|---|---|---|
| Type | AWS's own container orchestration service | Managed Kubernetes on AWS |
| Versions | Versionless | Kubernetes versions with standard and extended support |
| Compute | EC2 or Fargate; ECS Anywhere for your own servers | EC2 or Fargate; Hybrid Nodes, Outposts and EKS Anywhere |
| Orchestration charge | No additional charge for ECS orchestration | Hourly charge per cluster, based on the Kubernetes version |
| Skills needed | AWS concepts: tasks and services | Kubernetes skills |
| Free option (as of October 2026) | Not mentioned on the pages I read | Not mentioned on the pages I read |
ECS: AWS-native and versionless
AWS's ECS FAQs describe it as fully managed and versionless, with built-in tooling to deploy and scale containers. You define tasks and services, and it handles service discovery and the lifecycle of containers. It runs on EC2 instances or serverless with AWS Fargate, where you don't provision or manage servers, and ECS Anywhere lets you run the same way on your own infrastructure.
AWS's decision guide is a useful map here. It splits AWS container services into three layers: compute capacity (EC2 instances, Fargate and Outposts), orchestration (ECS, EKS and Red Hat OpenShift Service on AWS) and vertical solutions such as App Runner that bundle more of the work for you. ECS and EKS sit in the same orchestration layer, so either one can run on the same compute underneath.
The commercial detail is simple: AWS's ECS plans page says there's no additional charge for ECS orchestration. You pay for the compute and resources your containers use, such as EC2 instances or Fargate.
EKS: Kubernetes without running the control plane
AWS says EKS provisions, scales and patches the Kubernetes control plane across multiple Availability Zones and replaces unhealthy control plane nodes automatically. You still get standard Kubernetes, which is the appeal if your team knows it or you want skills and workloads that travel beyond AWS.
Here's the part to plan for. EKS charges per cluster per hour, and the rate depends on the Kubernetes version. AWS says a version gets standard support for the first 14 months after it's released in EKS, then moves into 12 months of extended support at an additional charge. AWS's decision guide adds that Kubernetes has three major releases a year and deprecates old versions, so EKS teams handle frequent cluster upgrades. ECS, being versionless, avoids that cycle.
Five questions from AWS's own logic
- Is your team small and AWS-only? ECS keeps things simple and versionless.
- Do you already run Kubernetes or want portable skills? EKS gives you standard Kubernetes.
- Can you commit to upgrading Kubernetes versions regularly? If not, EKS extended support adds to your bill.
- Do you want serverless containers? Both run on Fargate.
- Need containers on your own hardware too? ECS Anywhere and EKS Anywhere both exist.
For the wider cloud picture, see my guide to cloud management suites, and this comparison of AWS CloudFront and BunnyCDN if you're serving content from AWS too.
My advice on ECS or EKS
If you're a small or mid-sized team running on AWS and nobody's asking for Kubernetes by name, start with ECS on Fargate: there's no orchestration charge, no versions to upgrade and far less to learn. Choose EKS when Kubernetes skills, tooling or multi-cloud plans matter to your business, and plan engineering time for upgrades before each version's 14 months of standard support run out. Either way, AWS's decision guide is worth reading with your engineers before you commit.
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Frequently asked questions
Is there a charge for Amazon ECS?
AWS says there's no additional charge for ECS orchestration. You pay for the compute and resources your containers use, such as EC2 or Fargate.
How long is a Kubernetes version supported on EKS?
AWS says a Kubernetes version gets standard support for the first 14 months after release in EKS, then 12 months of extended support at an additional charge.
Can ECS and EKS both use Fargate?
Yes. AWS lists Fargate as a serverless compute option for both ECS and EKS.
Is ECS Kubernetes?
No. ECS is AWS's own container orchestration service. EKS is the AWS service that runs Kubernetes.
Do you have to manage the EKS control plane?
No. AWS provisions, scales and patches the EKS control plane across multiple Availability Zones and replaces unhealthy control plane nodes.
