The Node.js security scanning API is built on the powerful combination of Platformatic Cloud and Fastify, a modern web framework for Node.js. The API leverages Snyk to test npm packages for known security vulnerabilities, providing developers with a robust tool to enhance their application's security. By deploying the API to Platformatic Cloud, developers can make it accessible on the Internet while maintaining control over its configuration and security settings. The platform also includes features like automatic deployment, monitoring, and security scanning, making it an ideal choice for hosting Node.js applications.