PowerShell DSC enables a DevOps structure by providing a consistent, standardized configuration of operating systems and software as part of a continuous deployment pipeline. It increases the rate at which you can deploy by reducing the variation and drift from your existing configurations.

In simpler terms, DSC separates the who from the what and how. This separation of what and how is the core of DSC. Because they are separated, you can continually change the data points of your systems without touching the parts that actually set the system to the desired state.