APIs, or application programming interfaces, are integral to modern digital operations, facilitating seamless interactions between web pages, mobile apps, and even household devices. As their usage grows, so does the need for robust API security to protect against potential breaches that can cause significant financial and reputational damage, with the average cost per attack estimated at $6.1 million. APIs have become a primary target for cybercriminals, leading to the necessity of implementing comprehensive security measures, including authentication, encryption, rate limiting, input validation, and monitoring. Effective API security is essential for protecting sensitive information, ensuring compliance with regulatory requirements, and maintaining business continuity and competitive advantage. As API attacks become more sophisticated, strategies such as inventory management, continuous monitoring, and adopting advanced authentication techniques are crucial. Consistent application of security models across all APIs simplifies management and ensures proper protection. Organizations must secure APIs during development, employing practices such as access control, data integrity maintenance, and error response wrapping to mitigate risks and protect sensitive data, ultimately contributing to the secure and efficient operation of digital enterprises.