What is the primary purpose of call-to-action buttons in online advertising?

The primary purpose of call-to-action buttons in online advertising is to prompt users to take a desired action. These buttons are strategically placed in advertisements or on websites to encourage users to engage with the content in a specific way, such as purchasing a product, signing up for a newsletter, downloading a resource, or requesting more information. By using clear and compelling language, call-to-action buttons guide users towards the next step in their customer journey, ultimately helping businesses achieve their marketing and sales goals. The effectiveness of these buttons lies in their ability to create a sense of urgency or importance, motivating users to take action immediately.