Introduction to Kestrun (PowerShell)

Kestrun is a lightweight, cross‑platform web server you can configure entirely from PowerShell (and optionally mix with C# or VB.NET inline). It sits on ASP.NET Core Kestrel, so you get performance, HTTP/1.1–HTTP/3 support, TLS, compression, and familiar middleware patterns — with simple PowerShell cmdlets.

This chapter gives you a hands‑on start using three tiny samples you can run immediately:

• Sample-1: Hello World route returning plain text
• Sample-2: Multiple content types (text, JSON, XML, YAML)
• Sample-3: Multi-language routes (PowerShell, C#, VB.NET)

All sample scripts live in examples/PowerShell/Tutorial.

Next steps

• Dive into the other Tutorial chapters (Certificates, Logging, Razor Pages, Scheduling)
• Explore the richer example scripts under examples/PowerShell (e.g., MultiRoutes.ps1)
• Browse the PowerShell cmdlet reference under docs/pwsh/cmdlets
• Explore the PowerShell module source at src/PowerShell/Kestrun

---

Table of contents

• Hello World