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

https://wakelet.com/wake/gzbNnURt3wxkjVZmBBxos

Tiered link building uses two levels of backlinks to boost your site’s authority. Tier 1 links point directly to your site and have the most value. Tier 2 links support Tier 1 by linking to those backlinks, making them stronger