Contrast Runtime Security Platform is an application security solution that uses instrumentation technology to embed threat sensors within applications and APIs. The platform operates during runtime to identify vulnerabilities and detect attacks in real-time across development, staging, and production environments. The platform consists of two main components: Contrast ADR (Application Detection and Response) for detecting and responding to attacks on applications and APIs, and Contrast AST (Application Security Testing) for identifying vulnerabilities as code runs. The solution monitors the entire application stack including custom code, third-party applications, and dependencies. The platform is built on the Contrast Graph, which provides runtime intelligence and creates a unified security model for application and API security. It includes AI-powered remediation capabilities through Contrast AI SmartFix, which suggests and applies code fixes or integrates with AI models through the Contrast MCP Server. The solution provides visibility into the software supply chain, auto-remediates exploitable vulnerabilities, and delivers context-rich application threat alerts for triage and response. It integrates with DevOps and SecOps tooling and workflows, allowing security rules to be applied instantly across applications without redeployment. The platform includes dashboards covering inventory, attack surface, vulnerabilities, threats, defenses, and connections, with the ability to analyze security data from hundreds or thousands of applications across all environments.