IR-OS is a Cyber Incident Command Platform (CIRM) that coordinates the human side of cyber incident response for enterprises, mid-market, and SMB organisations. The platform sits between SIEM alert detection and incident closure, providing AI-assisted decision support, role-based coordination, regulatory clock tracking, defensible hash-chained audit records, and crisis communications workflows aligned to frameworks such as NIST SP 800-61, ISO/IEC 27035, CISA, SEC, GDPR, HIPAA, and MITRE ATT&CK. It is designed to compress mean time to contain, reduce regulatory and insurance compliance failures, and produce auditor- and board-ready incident documentation.