Azure Data Factory pipelines can be run either manually or through a trigger. An instance of pipeline execution in Azure Data Factory is defined as a pipeline run. These pipelines can be programmed to run automatically on a trigger or in response to external events. Below is the list of  triggers that can make Azure Data Factory pipelines run automatically:  Schedule trigger: This trigger executes a Data Factory pipeline run at a set time or schedule.   Tumbling window trigger: This trigger executes at a periodic interval without termination. It retains the previous state.  Event-based trigger: This trigger executes a pipeline run in a response to an event.