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

https://www.bookmarking-online.win/tiered-link-building-uses-two-levels-of-backlinks-to-boost-your-site-s-ranking

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