Aspireify an existing app

When you add Aspire to an existing application, the first choice is the language of the AppHost. Choosing a C# or TypeScript AppHost lets you stay in a familiar toolchain while still using the AppHost to orchestrate services, define resources, and model relationships for the application you already have.

Your app language and AppHost language are separate choices

Choose the AppHost language that matches the toolchain you want to use to author the orchestration layer. That choice doesn’t force you to rewrite the app you’re bringing to Aspire. Then, within that guide, choose the app stack you’re bringing to Aspire.

C# AppHost Stay in the .NET toolchain and orchestrate C#, Python, or JavaScript app examples from a C# AppHost.

TypeScript AppHost Stay in the JavaScript and TypeScript toolchain and follow the apphost.ts path end to end.

Before you begin

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

For command details and language options, see the CLI reference: aspire init.