Tiered link building uses two levels to boost your site’s ranking. Tier 1 links...

https://www.acid-bookmarks.win/tiered-link-building-is-a-practical-way-to-scale-your-authority-without-burning

Tiered link building uses two levels to boost your site’s ranking. Tier 1 links point directly to your site and have the most impact. Tier 2 links support those Tier 1 links by linking to them, making the overall link profile stronger and more natural