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

https://seo.edu.rs/blog/how-do-i-build-tier-2-content-that-looks-natural-and-not-forced-11162

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