Full definition
Supplier onboarding is defined as: Supplier onboarding is the structured process of collecting the documents, data and approvals needed before a new supplier can start work.
Supplier onboarding is the first controlled interaction between your organisation and a new external party. It typically covers company verification, insurance and certification checks, security and privacy documentation, banking details for payment and any industry-specific proof of competence.
Good onboarding is repeatable rather than ad-hoc. Teams that treat it as a checklist rather than a one-off email thread onboard faster, reject fewer suppliers late and carry a defensible audit trail into every future review.