Information Security Management System — the overall management structure (policies, risk process, roles, continual improvement) that ISO 27001 certifies.
An ISMS is not a single document but a system: a risk assessment process, a set of policies, defined roles and responsibilities, and a cycle of internal audits and management review. ISO 27001 certification assesses whether your ISMS exists, is followed, and is improved over time — not just whether individual controls are checked off.
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