Authoritative source

An authoritative source, within cybersecurity and Identity and Access Management (IAM), is the singular, most trusted system or repository that holds the definitive, accurate, and complete version of critical data. It serves as the "single source of truth" for specific information sets—such as digital identities, user attributes, roles, and access entitlements—ensuring data integrity across an organization's entire digital landscape.

Reliance on a clearly defined authoritative source is fundamental to maintaining a strong security posture. It drives key IAM processes including user provisioning, authentication, authorization, and de-provisioning. By eliminating discrepancies and conflicting data across interconnected systems, it reduces the risk of privilege creep, prevents unauthorized access from outdated information, and streamlines compliance efforts. Without designated authoritative sources, organizations face significant challenges in ensuring identity data accuracy, leading to operational inefficiencies and heightened security vulnerabilities.