Tiered link building uses two levels of backlinks to boost your site’s...

https://dibz.me/blog/strategic-insights-crafting-an-effective-tiered-link-building-campaign-959

Tiered link building uses two levels of backlinks to boost your site’s authority. Tier 1 links point directly to your website, providing strong, high-quality signals. Tier 2 links support those Tier 1 links by linking to them, helping increase their power