DevSecOps and Application Security (AppSec) are related but not the same. DevSecOps focuses on integrating security into the entire development and deployment lifecycle, especially within CI/CD pipelines, using automation for tasks like vulnerability scanning, code analysis, and compliance checks. AppSec, on the other hand, mainly concentrates on identifying and fixing security issues within the application itself, such as secure coding, testing, and risk assessment. DevSecOps is broader and process-driven, while AppSec is more specialized and security-focused. Organizations often use both together, where AppSec provides security expertise and DevSecOps ensures those controls are automated and applied continuously, resulting in stronger and more consistent application security.