This article explains tiered link building by breaking it into two levels. Tier...

https://mighty-wiki.win/index.php/How_Do_I_Disavow_Harmful_Backlinks_Without_Panicking%3F

This article explains tiered link building by breaking it into two levels. Tier 1 links point directly to your site, boosting its authority. Tier 2 links support those Tier 1 links, making them stronger and helping your site rank better