Tiered link building helps you grow your website’s authority step-by-step....

https://www.tumblr.com/powerfullyskeletaltrail/823653992075755520/whats-the-difference-between-tiered-link-building

Tiered link building helps you grow your website’s authority step-by-step. Start with Tier 1 links that point directly to your site for strong, high-quality backlinks