A batch job can be comprised of one or more batch steps. All steps in a job are processed sequentially. Dividing a batch application into steps allows for separation of distinct tasks in a batch application. Batch steps are created by implementing the interface com.ibm.websphere.batch.BatchJobStepInterface. The implementation of this interface provides the business logic of the batch step that the batch runtime invokes to run the batch application. See Creating batch job steps for more information.