The ecommerce analytics tools that work best for brands doing $1M to $10M in annual revenue are purpose-built intelligence platforms, not web analytics tools or spreadsheet-based dashboards. At this revenue stage, the data questions change fundamentally: you stop asking "how many visitors did we get" and start asking "which channel is generating profitable customers, what is our 90-day LTV by cohort, and where is the next 10% of revenue coming from." GA4, Shopify Analytics, and Looker Studio cannot answer those questions reliably. The brands growing fastest at this stage are the ones whose analytics stack is built around margin, customer intelligence, and forward-looking signals, not just traffic and top-line revenue.