Benefits
A call to action is an invitation for a visitor to take some desired action. The goal of marketing campaigns is to guide your audience to the buyer's journey so they eventually make a purchase. This is what a CTA does. It influences your audience to click the links and get engaged with your website and ultimately purchase your product or minimum provide email for the newsletter.
Perfect for email collection
Audience engagement
Turns visitors into clients
Increases website traffic
Usecase
Promote sales
Share blog references
Collect emails address for email marketing
Provide PDF files in return of emails
Drive audiences from other websites to yours
Link up a Video tutorial or podcast