This article shows how to connect acquisition, conversion, and retention...

https://blogfreely.net/paige-coleman3/landing-page-speed-how-slow-is-too-slow-for-ecommerce-ads

This article shows how to connect acquisition, conversion, and retention instead of treating each channel alone. Track CAC, AOV, and repeat purchase rate together, and weigh tools like $199/month plans against the sales and customer value they support.