Tiered link building are still effective in today's SEO world.

This approach focuses on boosting key links by building a structured chain of backlinks.

Rather than pointing low-quality links straight at your main website, tiered SEO strengthens your supporting content at the top layer, which Tiered link building in turn funnels authority to your primary target.

This is an intelligent way to reduce risk while still gaining off-page benefits.

If you're interested in this method, check out this Tier 1 post