ISO 19011:2018 defines an audit as a "systematic, independent and documented process for obtaining audit evidence [records, statements of fact or other information which are relevant and verifiable] and evaluating it objectively to determine the extent to which the audit criteria [a set of policies, procedures or requirements] are fulfilled." Successful organizations train and utilize Quality Auditors to establish and regularly execute a consistent methodology and for product-, process-, and system-level audits. These quality professionals can also find opportunities to drive performance improvement across the enterprise.