Somewhere around $5M in Shopify revenue, the reporting setup that got you here quietly stops working. Nobody announces it. You just start noticing that the CAC number in your spreadsheet doesn't match what Meta says, which doesn't match what Shopify says, and someone on the team has to spend an afternoon figuring out who's right. That's usually the first real sign you need proper ecommerce analytics for a brand doing $5M on Shopify, not another dashboard bolted onto the same manual process.