In the realm of modern application development, safeguarding credentials and configuration data is paramount. When deploying Spring Boot applications, managing sensitive information securely while maintaining the flexibility to adjust configurations is a challenge many developers face. This article delves into how you can use ConfigMaps in Kubernetes to protect your credentials, ensuring that your Spring Boot applications remain both secure and adaptable. We will explore practical examples, demonstrate code implementations, and discuss results to provide a comprehensive understanding of this crucial topic.