On which part of the IT environment does DevSecOps focus?

DevSecOps is an extension of DevOps that emphasizes integrating security practices and automation into every phase of the software development lifecycle (SDLC), from initial coding and design through testing, deployment, and ongoing operations, thus making application development its primary area of focus for security integration.

Wireless networks are a specific component of IT infrastructure, and while they need to be secured, DevSecOps primarily addresses the security of software applications and the processes surrounding their creation and deployment.

A data center is a physical or virtual infrastructure environment that hosts applications, but the DevSecOps methodology focuses on the development and operational processes of applications themselves, not the underlying data center infrastructure.

Perimeter networks relate to network boundary security and external defenses, which is a broader IT security concern, but DevSecOps specifically targets embedding security directly into the application development pipeline rather than just securing network perimeters.