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

https://www.play-bookmarks.win/tiered-link-building-is-about-passing-authority-efficiently-i-ll-show-you-how

Tiered link building uses two levels of backlinks to boost your site’s authority. Tier 1 links point directly to your site and have the most impact. Tier 2 links support those Tier 1 links, making them stronger and safer