PowerShell Desired State Configuration (DSC) is a declarative approach to server configuration that contrasts with the imperative nature of standard PowerShell scripts, enabling tasks such as installing Windows features and setting environment variables during server provisioning. This text explains how Octopus, traditionally an Application Release Automation tool, integrates with PowerShell DSC to effectively manage, test, and deploy configurations, offering features like health checks to detect configuration "drift" and automatic deployments to correct it. By using Octopus, users can bypass the need for separate DSC push/pull servers, leveraging Octopus and Tentacle's secure communication modes for deploying DSC scripts. The text provides a walkthrough of setting up a demo environment, creating a simple DSC script to set an environment variable, and using Octopus to manage the deployment and test configurations. It highlights Octopus's ability to promote DSC script changes across environments and details how Octopus's recent features, such as automatic deployment triggers and custom health check policies, enhance its capability as a configuration management tool alongside PowerShell DSC.