The term call to action (CTA) refers to measures designed to get an immediate response from users. Call to actions are placed on all marketing channels that encourage consumers to take action. In online marketing, a call to action may be a button or a link. In order to prompt the desired response, call to actions address users directly and feature striking messages like “Buy now!” as well as eye-catching buttons and links. The desired results can be purchasing a service, completing a purchase process or signing up for a newsletter.