Tiered link building uses two layers of links to boost your site’s ranking....

https://travissinsightfulthoughtss.theglensecret.com/what-is-fantom-click-and-how-does-it-relate-to-tiered-link-building

Tiered link building uses two layers of links to boost your site’s ranking. Tier 1 links point directly to your main site, adding strong authority. Tier 2 links support those Tier 1 links, making them more powerful