Off-page escort SEO. If we understand how external factors can influence our resource, we will get an answer to the question what is external optimization. The factors that affect our site from outside are of course the links and the more the better. But here it is worth mentioning not all links are equally good and therefore linking to the site links should preferably be as "fat" as possible. External links as well as internal ones (but to a lesser extent) play a very important role in the promotion of the site, it is important first of all not the quantity, but their quality.