Tiered link building helps boost your website’s SEO by building strong,...

https://www.slideserve.com/richard_russell21/what-should-i-use-for-tier-1-links-if-i-want-to-rank-a-landing-page

Tiered link building helps boost your website’s SEO by building strong, high-quality links first (Tier 1). Then, you support those links with additional, easier-to-get links (Tier 2) that point to your Tier 1 links