ISO 27001 is the international standard for establishing, implementing, maintaining, and continually improving an Information Security Management System (ISMS). An ISMS is a systematic approach to managing information security risks across an organization through people, processes, and technology. ISO 27001 requires organizations to identify information assets, assess security risks, implement controls to mitigate risks, and demonstrate compliance through third-party audit. The standard covers 14 domains: information classification, access control, cryptography, vendor management, incident response, business continuity, employee training, and more. Certification proves to customers and partners that security is managed rigorously.