Tiered link building helps you grow your website’s authority step by step....

https://foxtrot-wiki.win/index.php/How_Do_Tier_1_vs_Tier_2_vs_Tier_3_Links_Actually_Work%3F

Tiered link building helps you grow your website’s authority step by step. First, Tier 1 links point directly to your site to boost rankings. Then, Tier 2 links support those Tier 1 links, making them stronger and more natural