The percentage of the people who saw a search result, ad, or e-mail who then clicked through to your website. (clicks / impressions=CTR)
CTR is the English abbreviation of Click-Through-Ratio. CTR is also called the click through rate. Click-Through ratio means that the click-Through ratio is expressed as a percentage. The click-through ratio shows the ratio of the number of people who see an advertisement or search engine result and the number of people who actually click on the website.
In the case of an advertisement, CTR is a key factor. The higher the CTR, the more people who have seen the ad also click on it. CTR is also a factor in determining the quality score in AdWords. Increasing CTR can include making the ad more attractive to the target audience.
The CTR in the search engine indicates how often people click on your ad in the search engine after they have viewed it. The height of the CTR depends on your spot in the search engine. Ads that are in the top spot in the search engine deliver a higher CTR than ad that is at the bottom of the search engine. Besides the spot of the ad in search engine, an attractive text can also provide a higher CTR. If your ad is more attractive than your upstairs in the search engine, you may still have a higher CTR. And this contributes back to a better quality score!
All your ads have a high CTR, it means that people find your ad useful or relevant. Google rewards this by giving high CTR ads a higher quality score. A higher quality score can help reduce costs and increase your ad position.