Tiered link building helps boost your site’s authority by creating two levels...

https://andressmasterdigests.image-perth.org/how-do-i-measure-success-from-a-tiered-link-building-campaign

Tiered link building helps boost your site’s authority by creating two levels of backlinks. Tier 1 links point directly to your website from quality sources, while Tier 2 links support those Tier 1 links, making them stronger