# Create a multi-node parallel job definition
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Before you can run jobs in AWS Batch, you must create a job definition. This process varies slightly between single-node and multi-node parallel jobs. This topic covers specifically how to create a job definition for an AWS Batch multi-node parallel job (also known as *gang scheduling*). For more information, see [Multi-node parallel jobs](multi-node-parallel-jobs.md). 

**Note**  
AWS Fargate doesn't support multi-node parallel jobs.

**Topics**
+ [Tutorial: Create a multi-node parallel job definition on Amazon EC2 resources](multi-node-job-def-ec2.md)