Why is CTR important?

[Simi123]

CTR certainly gives you a broad view of how well your ad attracts visitors. There’s a wide range of acceptable rates given your industry but it’s the most telling when your rates are extraordinarily low, or high.

Gives a base of visitors who will potentially convert
Impacts QS > which impacts CPC > impacts ROI
Helps gauge success relative to competitors and between campaigns
Aids in evaluating ad copy, specifically the call to action