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

This approach involves powering up key links by building multiple layers of backlinks.

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

This is an intelligent way to stay safe while still gaining off-page benefits.

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