Tiered link building helps boost your website’s authority by creating two...

https://www.beacon-bookmarks.win/tiered-link-building-uses-two-levels-of-links-to-boost-your-site-s-seo-tier-1

Tiered link building helps boost your website’s authority by creating two levels of backlinks. Tier 1 links point directly to your site from high-quality sources, while Tier 2 links support those Tier 1 pages