This article looks at ecommerce marketing as a connected system, not a pile of...

https://instaquoteapp.com/how-do-i-judge-channels-by-business-outcomes-not-vanity-metrics/

This article looks at ecommerce marketing as a connected system, not a pile of separate campaigns. It explains how your offer, channels, customer experience, and follow-up affect AOV, CAC, conversion rate, and repeat purchases