Which Metrics Matter Most for Diagnosing Conversion Issues?

Start with the conversion funnel

Conversion rate is the outcome metric, but it needs context. Review click-through rate first because it shows whether your ad is attracting the right shoppers. If CTR is healthy and conversion rate is low, the issue often sits after the click—on the product detail page, pricing, or reviews. If CTR is also low, the problem may be earlier in the funnel, such as ad creative, placement, or keyword targeting.

• Conversion rate measures how effectively clicks turn into orders.
• Click-through rate signals whether the ad matches shopper intent.

Spend metrics that reveal wasted budget

Cost-per-click and spend by search term help separate profitable traffic from budget leakage. A high CPC on a term with few attributed sales usually means you are paying for clicks that do not convert. Segmenting spend by search term makes those patterns visible and supports more precise negative keyword or bid decisions.

• Attributed sales confirms which search terms actually generate revenue.
• CPC shows whether click costs are inflated relative to the return.
• Spend by search term flags where budget accumulates without orders.

When this matters most

This diagnostic view is most useful when campaigns have enough click volume to produce meaningful patterns. If a campaign has very few clicks, conversion rate can swing dramatically and may not be reliable. In those cases, focus on click-through rate and search term volume before making large bid changes. For teams running multiple marketplaces or accounts, a Amazon Ads dashboard can make trend comparison faster because it brings spend, sales, ROAS, and conversion rate into one view.