Tiered link building is about passing authority strategically rather than just...

https://canvas.instructure.com/eportfolios/4299058/home/what-does-hyper-targeted-mean-and-how-do-i-do-it-responsibly

Tiered link building is about passing authority strategically rather than just throwing links at your homepage. By using high-quality tier 1 links to boost your core pages and supporting them with relevant tier 2 links, you create a sustainable safety net