Cloud application security has become increasingly crucial as cloud-based applications grow in popularity, driven by their flexibility and rapid deployment capabilities. However, these same features introduce security risks, requiring organizations to implement robust security measures, particularly within DevSecOps teams managing complex, microservices-based, cloud-native applications. Cloud application security encompasses a range of strategies, including authentication, data encryption, and vulnerability management, to mitigate exposure to threats. The shared security responsibility model between cloud service providers and organizations emphasizes the need for secure coding practices and monitoring. Challenges such as open-source vulnerabilities, siloed security tools, and rapid development cycles complicate the security landscape, while threats like misconfiguration, unauthorized access, and insecure APIs persist. Best practices involve strong authentication, regular updates, and proactive monitoring. The evolving nature of cloud applications necessitates advanced, automated solutions like Dynatrace, which integrates observability and security analytics to enhance real-time threat detection and streamline the software development lifecycle.