For a supplement brand, ecommerce analytics use cases center on five business-critical problems: identifying which SKUs and channels actually generate profit rather than just revenue, tracking subscription retention and churn at the cohort level, forecasting inventory for products with irregular demand spikes, reconciling Amazon and Shopify performance without double counting, and measuring the true CAC across Meta, Google, and email combined. Supplement brands face a specific set of data challenges that generic ecommerce reporting tools are not built to solve, including complex subscription revenue, multi-channel presence across Amazon and DTC, and high customer acquisition costs that only make sense against long-term LTV.