Ostendio is a governance, risk, and compliance (GRC) platform designed for managed service providers (MSPs), managed security service providers (MSSPs), and cloud security service providers. It enables service providers to manage security and compliance programs for multiple clients from a single platform. The platform supports over 300 security and compliance frameworks, allowing users to crosswalk controls across multiple standards simultaneously. This eliminates the need to rebuild compliance programs from scratch when adding new frameworks. Supported frameworks include SOC 2, ISO 27001, HIPAA, CMMC, and PCI DSS, among others. Ostendio replaces manual processes such as spreadsheets, emails, and client portals with centralized workflows. It automates compliance tasks and allows completed audit tasks to be reassigned to reduce redundancy during audit preparation. The platform claims to reduce audit preparation time by up to 80%. The platform supports multi-client management, enabling MSPs to onboard clients, track compliance progress, and conduct Quarterly Business Reviews (QBRs) through built-in templates. It provides a full audit trail and real-time synchronization of client activities. Ostendio also facilitates collaboration between MSSPs, auditors, and clients through a shared platform, centralizing data capture and third-party security posture evaluation. The partner program offers white-label or bundled delivery of security and compliance services as a recurring revenue stream.