Amazon ECS Service Limits
The following table provides the default limits for Amazon ECS for an AWS account which can be changed. For more information, see AWS Service Limitsin the Amazon Web Services General Reference.
| Resource | Default Limit |
|---|---|
| Number of clusters per region, per account | 1000 |
| Number of container instances per cluster | 1000 |
| Number of services per cluster | 500 |
The following table provides other limitations for Amazon ECS that cannot be changed.
| Resource | Default Limit |
|---|---|
| Number of load balancers per service | 1 |
| Number of tasks per service (the desired count) | 1000 |
Number of tasks launched (count) per
run-task | 10 |
| Number of container instances per start-task | 10 |
| Throttle on container instance registration rate | 1 per second / 60 max per minute |
| Task definition size limit | 32 KiB |
| Task definition max containers | 10 |
| Throttle on task definition registration rate | 1 per second / 60 max per minute |
