Advertising Cost of Sale (ACoS) is a common Amazon metric that reflects the actual expense of generating revenues from customer transactions due to advertising.

A 3PL, or third-party logistics provider, is a company that offers outsourced logistics services to businesses that need to manage their supply chain operations more efficiently.

Fulfillment by Amazon (FBA) is a service provided by Amazon that allows third-party sellers to store their products in Amazon's fulfillment centers