What is Run Job task? · Ultra Transcenders glossary

Lets one job kick off a different job in the same workspace, optionally handing its job parameters on. Nesting beyond three levels is unsupported.

In the Ultra Transcenders books

Each book explains Run Job task in context, with comparison tables and the common traps.

Job
A sequence of steps executed together on one agent or runner, or on the server for agentless work. While running, each occupies one of your parallel jobs.
Workspace
Teams in Power BI and Microsoft Fabric collaborate in this folder-style container, which groups items such as reports, semantic models and lakehouses, controls who can access them and is assigned a capacity.