The entire point of marketing is to generate a response from the reader or viewer. To encourage as many responses as possible your messaging needs a strong subject line or title, rock solid offer to keep people engaged, and a clear call to action to convince them to click and start moving down the conversion funnel.
Landing Page Optimization is the process of enhancing or improving each element on your landing page to increase conversions. (Neil Patel, writing for Crazy Egg) Consistent tone, design, and messaging are essential. Unfortunately, small tweaks are often not enough to improve the performance of a landing page. Many times, a better, overall design is called for.