Data Theorem API Secure is an application security platform that provides comprehensive security testing and monitoring for APIs and modern applications throughout their development lifecycle. The platform combines multiple security testing methodologies including Static Application Security Testing (SAST), Dynamic Application Security Testing (DAST), Interactive Application Security Testing (IAST), and Software Composition Analysis (SCA) to identify vulnerabilities across different stages of development. Key capabilities include automated API discovery and inventory management across cloud environments, continuous monitoring of application assets including mobile applications and web services, and software supply chain security assessment for third-party components and dependencies. The system generates Software Bill of Materials (SBOM) documentation and integrates with DevSecOps workflows and CI/CD pipelines to enable security testing within existing development processes. Security assessments are performed through automated scanning of code repositories, analysis of API endpoints for security issues, runtime environment monitoring for threats, evaluation of third-party dependencies, and compliance tracking with audit record maintenance. The platform maintains continuous visibility over application security posture through automated discovery processes and regular security assessments, enabling organizations to identify and address security issues across their application infrastructure.