Firstly, landing page is designed to encourage the visitor for the target action.
This action might be absolutely anything: order a product, leave your contact details, subscribe, download a lesson/course/book.
It is necessary not only to develop a creative and eye-catching design, but also to correctly chronologically present information. The visitor should be gently led throughout the site, while being softly suggested the need for a targeted action. You have done everything right if at the end the visitor ends up thinking to themselves: “How did I live without this product before?!”.