Tiered link building helps you boost your website’s SEO by creating two levels...

https://lilysbestblog.theburnward.com/how-do-i-set-goals-for-a-link-building-campaign-without-guessing

Tiered link building helps you boost your website’s SEO by creating two levels of links. Tier 1 links point directly to your site using trusted sources. Tier 2 links support those Tier 1 links to strengthen their value