Tiered link building uses two levels of links to boost your website’s ranking....

https://www.bookmarking-presto.win/tiered-link-building-builds-site-authority-i-connect-high-quality-tier-1-links

Tiered link building uses two levels of links to boost your website’s ranking. Tier 1 links point directly to your site and carry the most weight. Tier 2 links support those Tier 1 pages, making them stronger and more trustworthy