Definition
Cloud runtime security refers to the continuous monitoring and protection of cloud-based applications and infrastructure while they are actively running. It focuses on detecting and responding to threats in real time, ensuring that workloads remain secure throughout their operational lifecycle. This involves observing system behavior, analyzing network traffic, and identifying anomalous activities that could indicate a compromise. Implementing cloud runtime security is crucial for maintaining operational integrity and preventing data breaches in dynamic cloud environments. For instance, it can detect a sudden surge in outbound data transfer from a server, signaling a potential data exfiltration attempt. Unlike static security measures that scan for vulnerabilities before deployment, runtime security actively defends against evolving threats during operation. This concept is vital for certifications like CompTIA Security+, CySA+, and CISSP, as well as for AWS solutions architect roles.