One of the coolest things about PowerShell is the interactive scripting environment that is built into the whole package. It features an interactive shell where you can run commands as you would in a normal shell session, and a coding window with syntax awareness and debugging features.

You can write up, test, and send scripts just like in any other programming experience:

The file extension for any PowerShell script you write is ps1. Unfortunately, not all PowerShell installations are the same, and different versions of PowerShell have some differences; keep this in mind when you hope to run the ps1 file you wrote on a given host.