Test of Things (ToT) is a compliance management platform designed for Industrial IoT manufacturers and suppliers. The platform addresses cybersecurity compliance requirements for IoT devices, focusing on European Union regulations including IEC 62443, Radio Equipment Directive (RED), and the Cyber Resilience Act (CRA). The platform provides end-to-end compliance lifecycle management through an integrated workspace that unifies firmware, devices, services, documentation, and audits across entire product portfolios. It offers automated assessments and testing to reduce manual processes and consultant dependencies. ToT includes AI-guided workflows designed for product teams to achieve compliance independently. The platform performs continuous monitoring of firmware updates, cloud changes, vulnerabilities, and Software Bill of Materials (SBOM) to detect compliance gaps in real time. It provides automated tool-driven testing, scanning, and real-time alerts. The platform supports both system manufacturers requiring end-to-end compliance management and component suppliers needing component-level compliance. It includes role-based collaboration with granular user access controls for security, GRC, engineering, and IT teams. ToT maintains a single source of truth for compliance evidence across product portfolios and generates compliance-ready reports. The platform is backed by EU funding through ELY-Keskus and supports compliance frameworks including IEC 62443-4-1, IEC 62443-4-2, Cyber Resilience Act (CRA), EN 18031-1, and custom frameworks.