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

https://www.foxtrot-bookmarks.win/tiered-link-building-scales-authority-send-high-quality-tier-1-links-to-your

Tiered link building uses two levels of backlinks to boost your site’s authority. Tier 1 links point directly to your site, while Tier 2 links support those Tier 1 backlinks