Tiered link building organizes backlinks into two groups. Tier 1 links point...

https://alpha-wiki.win/index.php/What_Anchor_Text_Should_I_Use_for_Tier_2_Links_Pointing_to_Tier_1%3F

Tiered link building organizes backlinks into two groups. Tier 1 links point directly to your site and carry the most value. Tier 2 links support those Tier 1 links, boosting their strength and helping improve your rankings