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

https://wiki-byte.win/index.php/Should_I_Build_Tier_2_Links_to_Guest_Posts_or_to_the_Homepage%3F

Tiered link building uses two levels of backlinks to boost your site’s authority. Tier 1 links point directly to your website, delivering the most value. Tier 2 links support those Tier 1 pages, helping them rank higher