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

https://emilianosniceop-eds.tearosediner.net/how-do-i-measure-success-from-a-tiered-link-building-campaign

Tiered link building uses two levels of backlinks to boost your site’s rankings. Tier 1 links point directly to your site and are high quality. Tier 2 links support your Tier 1 links, making them stronger and more effective