Tracking BFCM performance by channel means monitoring revenue, ad spend, conversion rate, and average order value separately for each marketing channel, Meta, Google, email, TikTok, organic, in real time during Black Friday and Cyber Monday, then reconciling that data against actual Shopify orders once the sale ends. The reason this matters more during BFCM than any other time of year: spend moves faster, traffic spikes harder, and the cost of a tracking blind spot compounds within hours instead of days.