This article explains how tiered link building works by using two levels of...

https://highstylife.com/how-do-i-tell-if-a-backlink-is-relevant-or-just-high-da-fluff/

This article explains how tiered link building works by using two levels of links. Tier 1 links point directly to your site for strong, clear signals. Tier 2 links support those Tier 1 links, boosting their power and keeping your main site safer