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

https://eduardossmartcolumn.cavandoragh.org/broken-link-building-step-by-step-using-ahrefs

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