A call to action, or CTA, is a prompt that encourages users to take a specific next step. It appears in websites, emails, ads, social media posts and other forms of marketing or content. CTAs guide users toward desired actions such as making a purchase, subscribing to a newsletter, downloading a resource or making a donation. They are usually presented as buttons, links or concise statements like “Get Started,” “Donate Now,” or “Book a Demo.”

An effective CTA is clear, direct and action-oriented. It should align with both the user’s intent and the goals of the campaign. Strong CTAs use persuasive language that communicates value, urgency or relevance. For example, a nonprofit might use “Support a Child Today” to prompt donations, while a SaaS company might use “Start Free Trial” to encourage sign-ups. Placement also matters. CTAs should be easy to find, visually distinct and placed at strategic points in the user journey, such as after a benefit-focused paragraph or at the end of a landing page.

CTAs play a vital role in conversion rate optimisation. Without them, users may leave a page without taking any action, even if they are interested. Testing different CTA styles, placements and copy can significantly improve engagement. Marketers should also ensure CTAs are accessible, mobile-friendly and consistent with brand voice. Whether your audience is exploring a blog, watching a video or reading an email, a well-crafted CTA provides direction and momentum, helping users move from interest to action.