Q: Can I trigger actions on-premises from Azure Automation?
A: Azure Automation is essentially PowerShell Workflows running in Azure, which means any endpoint that's accessible from PowerShell via the Internet could be triggered from an Azure Automation. However, triggering something on-premises means that the endpoint is accessible from the Internet, which is typically a concern. The question really should be whether a secure way exists to trigger actions on-premises from Azure Automation.