Tiered link building uses two levels to boost your website’s authority. Tier 1...

https://www.save-bookmarks.win/tiered-link-building-is-still-a-solid-way-to-move-the-needle-if-you-do-it

Tiered link building uses two levels to boost your website’s authority. Tier 1 links point directly to your site and have the highest quality. Tier 2 links support Tier 1 by linking to those pages