Job is a configured task performed by a plug-in.

Creating/configuring a job is made from a context, which is supported by the plug-in you want to use. If no particularly context is needed, the job configuration is started from the plug-in's single item view.

Some jobs can be configured to execute immediately (for a few plug-ins it is mandatory that the job runs immediately), but normally jobs are placed in the job queue after they have been configured. The jobs will then be picked out for execution depending on their priority and estimated execution time.