Definition:

A prompt that encourages a website visitor to take a specific action, such as filling out a form or making a purchase

Example:

“Sign up for our newsletter and get 10% off your first purchase! Click here to subscribe.”

In this example, the CTA is “Click here to subscribe.” The prompt encourages the website visitor to take a specific action, which is to sign up for the newsletter by filling out a form, in exchange for a discount on their first purchase. The CTA is designed to be clear and attention-grabbing, and to motivate the visitor to take action towards becoming a customer.