Tiered link building uses two levels of backlinks to boost your site’s ranking....

https://wiki-fusion.win/index.php/What_are_the_Most_Common_Tiered_Link_Building_Mistakes_Beginners_Make%3F

Tiered link building uses two levels of backlinks to boost your site’s ranking. Tier 1 links point directly to your pages, driving real traffic and building authority. Tier 2 links support Tier 1 by linking to those backlinks, making them stronger