Every budget holder eventually asks "was it worth it?", and most event teams answer with attendance and a satisfaction score because that is what they have to hand. This course shows you how to answer the real question. You agree the measures with the budget holder before the event, using ROI (return on investment) where money can honestly be put on the outcome and ROO (return on objectives) where it cannot. You then use AI to clean registration, attendance and survey exports safely, build a sponsor value report from the sponsor's own figures, and boil it all down to a one-page ROI summary for a board or client. The last lesson is about what AI cannot tell you, so the number you present is one you can defend.