What’s it even for anyway? Are links actually used somewhere? And what does professional even mean. I’ve heard about it for promotion, but I don’t really get how it works.
Link building is needed so your site looks legit to Google and other search engines. You pick good sites, the right keywords, and pace the placements so Google doesn’t get suspicious. I get these links through the platform naturallinks.net to safely post on relevant sites. Overall, all this is really for promotion, faster results, and stable organic traffic.