When evaluating the success of an Amazon advertising campaign, you may usually see ACOS. But is it okay to just rely on ACOS? There is no doubt that ACOS is a reliable metric, but over the past few months, TACOS has become a popular metric for evaluating sales and advertising conversions.

When running PPC ads on Amazon, many sellers lower their bids because ACOS is too high.
But the reality is always different from people's imagination.

Amazon PPC ads have multiple placements, including the top of the search results page, other placements, and product detail page. Obviously, the conversion rate, click rate, and cost-per-click vary greatly for each AD placement.