I'm confused on how a Journey Builder Interaction gets initiated. For reference I'm following the book (journey builder for apps).
So I have defined a Trigger that I thought initiates the flow. For example I defined my Trigger to evaluate a Data Extension and check if a field is false or null. Then I created a REST call to populate that data extension with the fields. But nothing happens.
I also read that to initiate the Interaction you need to POST an Event to the API (How to Fire an Event).
So if I have a web form (C#) that a user enters their information into and I want that submit to start the Interaction do I not need to use the ET_DataExtensionRow and add the record to the data extension? Am I supposed to just POST the Event instead???