In this video I go over the two methods of starting a runbook from another runbook.  This is referred to as a parent child runbook relationship that facilitates a modular approach to creating runbooks.  I go over the two different ways to start a child runbook, by Inline Execution and with the Start-AzureRMAutomationRunbook cmdlet. 

This video also goes over the multiple way to pass data between runbooks with both Inline Execution and the cmdlet method, detailing the nuances of each.  I also introduce how to use Azure Automation Variable Assets from a within a runbook.  There are six demonstrations that go over the multiple scenarios of starting runbooks and passing data between them.