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

https://www.deltabookmarks.win/this-article-explains-how-tiered-link-building-works-by-focusing-on-two-groups

Tiered link building uses two levels of backlinks to boost your site’s authority. Tier 1 links point directly to your website, providing strong, high-quality signals. Tier 2 links support those Tier 1 links by linking to them, helping increase their power