Therefore, we will tell you more about everything below. A Brief History of the Origins of Link Building The story is actually quite fascinating and quite long. The era of building up external links has been going on for three decades now. And, it is worth saying, it has not always been straightforward. In the nineties, external links did not play a special role for SEO. The first search engines at that time used the simplest algorithms for indexing and ranking web pages.
External link mass did not have much significance. In the late nineties, Google introduced the PageRank algorithm, which had already begun to evaluate the quantity and quality of external links. This made link building an important part of SEO and external optimization, but the algorithms were still very imperfect. As a result, the era of gray and even black SEO began in the 2000s. Webmasters began to massively purchase links on external resources in order to "take quantity" rather than quality.