Four-dimension valuation: my method

Hook After burying the "lines × day-rate with AI discount" method for my 91,000-line ERP, I found myself facing a harder question than the first one. What do I replace it with? I spent two days testing every single-dimension model available. None held. Here is the graveyard of my attempts, and what eventually worked: four dimensions, summed, not weighted, with a SQL deduplication rule that took me a week to find. If you have 30 seconds. No single metric holds for valuing an internal ERP: ARR, Sa