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Certainty Blog

A procurement director and supply chain analyst review a multi-tier supplier visibility dashboard on a tablet in a manufacturing facility, with shipping crates labeled by country of origin in the background.

How to Build a Multi-Tier Supplier Audit Program (Tier 1/2/3 Visibility)

Most enterprise supplier audit programs cover Tier 1 well and stop there. In 2026, that gap is no longer acceptable. UFLPA enforcement, the EU Corporate Sustainability Due Diligence Directive, and the revised GHG Protocol Scope 3 standard all require visibility into Tier 2 and Tier 3. This post is the operational playbook for building a […]

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