Job queues - AWS Batch
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Job queues

Jobs are submitted to a job queue where they reside until they can be scheduled to run in a compute environment. An AWS account can have multiple job queues. For example, you can create a queue that uses Amazon EC2 On-Demand instances for high priority jobs and another queue that uses Amazon EC2 Spot Instances for low-priority jobs. Job queues have a priority that's used by the scheduler to determine which jobs in which queue should be evaluated for execution first.

Important

For Amazon ECS Managed Instances job queues that include both On-Demand and Spot compute environments, all On-Demand compute environments must be ordered before any Spot compute environments in the computeEnvironmentOrder. For more information, see Job queues on Amazon ECS Managed Instances.

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