Build your first Aspire app

Build your first Aspire app by first choosing the AppHost language you want to work in. The AppHost is the code-first orchestrator for your solution, so this choice lets you stay in a familiar toolchain while deciding whether your walkthrough uses AppHost.cs / apphost.cs or apphost.ts.

Start with the AppHost language

For a brand-new solution, the biggest difference between the quickstarts is the language of the generated AppHost. Choose the page that matches the toolchain you want to use to author the orchestration layer.

C# AppHost Use the .NET toolchain for the AppHost and start from the C# or Python starter templates.

TypeScript AppHost Use the JavaScript and TypeScript toolchain for the AppHost and start from the JavaScript starter template.

Before you begin

Before following either quickstart, make sure you’ve completed the prerequisites and installed the Aspire CLI.

After completing either quickstart, continue with Deploy your first Aspire app.