In the ever-evolving digital realm, ensuring strong API security is paramount for enterprises. However, navigating the complexities of implementation can be daunting. Our API Security Maturity Model, inspired by the Richardson Maturity Model, provides a systematic approach to bolstering security and trust in API frameworks. Delve into our eBook, a compilation of critical articles addressing pivotal aspects of API and microservices security. Explore the varying levels of API security maturity: