A landing page is a web page that is specifically created to make a visitor take a certain action, like register for a training course or order a product.
Unlike regular pages on your website, you write them for a very specific target group. This could be people who click on your advertisement or who have just read your email.
Often, these pages cannot be found in the menu of your website, because they are built specifically for your target group. Landing pages do not make your brand easy to find in the search results. You want your landing page to match the content of your email as closely as possible, so that fewer visitors drop out and no one is distracted by other information on your website.
Finally, the big advantage is that you can measure exactly which recipients click through from your email to your landing page. That tells you a lot about the interests of those people, but also about the effectiveness of your email. It also allows you to share exclusive content with your newsletter subscribers.