Explain what CTR is?
CTR stands for click-through rate - It is the percentage of impressions that resulted in a click.
For Ex. If your PPC ad had 1,000 impressions and 1 click, Then your CTR is going to be 0.1 per cent.
As a metric, CTR is not just an indication of how relevant searchers are finding your ad to be and overall ad performance, It also contributes to your Ad Rank in the search engine.
In AdWords, your CTR is one of the key components of your quality score. In SEO, your CTR is going to determine whether you maintain your ranking in SERP, That’s how CTR determine your success.