Tiered link building boosts your site’s authority by creating two levels of...

https://www.4shared.com/office/BIObF2h6fa/pdf-72309-44204.html

Tiered link building boosts your site’s authority by creating two levels of backlinks. Tier 1 links point directly to your site, offering strong, high-quality signals. Tier 2 links support those Tier 1 backlinks, making them stronger and more effective