Landing page (eng. the landing page is also a "landing page") is a one-page web site, pursuing the only goal: to sell the visitor a product or service or to obtain contact information for further work with this person through e-mail. To push the user to the desired action, the landing page must be colorful and informative. Usability is another important characteristic of the correct target page.
To significantly save time and money on the development of the landing page, you can buy a template or use a generator of landing pages.