Tiered link building is a reliable way to boost site authority without risking...

https://bizzmarkblog.com/tiered-link-building-campaign-checklist-a-week-by-week-guide/

Tiered link building is a reliable way to boost site authority without risking your main domain. The strategy involves building high-quality tier 1 links to your pages, then supporting those with tier 2 links to pass extra authority