The PromoPilotﾃ｢窶楪｢ cascade link building strategy, explained in this article, is quite detailed. They cover the L1, L2, L3 tiers and their impact on DR & UR. Also, the mention of 65+ free SEO tools is a good takeaway. https://telegra.ph/Identify-and-Fix-Broken-Links-for-Better-SEO-Performance-10-14