PowerShell is a command-line interface and scripting language developed by Microsoft for task automation and configuration management. PowerShell is built on the .NET framework and allows administrators to automate administrative tasks by executing commands and scripts across multiple systems. It provides access to system functions and information via a set of cmdlets, which are small, focused commands that carry out specific tasks. PowerShell offers a powerful and flexible platform for system administration and can be used to automate many routine tasks, such as system configuration, deployment, and management of servers, applications, and network devices. It is widely used in Windows environments and can also be used on other platforms, including Linux and macOS.