Click-through rate is a way of measuring the success of an online advertising campaign.
A click-through rate (CTR) is obtained by dividing the number of users who clicked on an ad on a webpage by the number of times the ad was delivered (impressions).
For example, if your banner ad was delivered 100 times (impressions delivered) and 1 person clicked on it (clicks recorded), then the resulting CTR would be 1%.
Our article on the outline for a marketing plan can help you plan your advertising and marketing efforts, and check out our article on what metrics to track (and what not to track) on the LivePlan blog (as well as our entry on website metrics).