Tiered link building boosts your site’s authority by using two levels of links....

https://www.jelly-bookmarks.win/this-article-explains-tiered-link-building-where-tier-1-links-point-directly

Tiered link building boosts your site’s authority by using two levels of links. Tier 1 links point directly to your site and should be high quality. Tier 2 links support those Tier 1 pages, making them stronger in search rankings