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

https://www.third-bookmarks.win/tiered-link-building-helps-you-move-the-needle-without-burning-your-budget

Tiered link building uses two levels of backlinks 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 links, making them stronger and more credible