APIs are prime attack surfaces, presenting numerous opportunities for exploitation if not adequately secured. The OWASP Top 10 API Security Risks provides a comprehensive list of APIs' most common and critical security threats that API security testing can help combat. Testing with static application security testing (SAST) tools analyzes code for security vulnerabilities without executing it, while dynamic application security testing (DAST) tests the running application or API for vulnerabilities exposed during its operation. Software composition analysis (SCA) identifies security vulnerabilities and compliance issues in third-party components used within the API. Effective API security testing is crucial to safeguard against evolving threats in the digital landscape, as organizations can have hundreds of API endpoints that offer gateways to sensitive information and systems functionalities, making them attractive targets for bad actors. Integrating SAST, DAST, and SCA tools into CI/CD pipelines ensures consistent and comprehensive security testing, minimizing human error and oversight, and creating a culture of security within the organization where safeguarding data and maintaining customer trust become integral parts of the software development lifecycle.