Anyone who talks to agencies and website operators about the subject of link building gives rise to extensive and controversial discussions. One side is skeptical about the targeted purchase of links, categorically rejects this practice. After all, Google, as the most important search engine in the German-speaking world, speaks out negatively and even punishes. Here, according to Google, the competition is distorted. Nevertheless, sensible external links are welcomed, as they represent a certain added value for the user. The other side of the discussion sees link building as an important instrument for permanently stabilizing and increasing rankings. Here, link building is a natural part of online marketing activities and tips the scales.