When will you use this?

Use when you are ready to put the app online for users or employers to try.

• Publishing means copying your built app to IIS, Docker, or Azure App Service.
• CI/CD runs dotnet test and dotnet publish automatically on every git push.

Real-world: Freshdesk-style ticket API

The Customer support team building Freshdesk-style ticket API uses .NET 8 and .NET 9 Features to use latest performance and language improvements. support agents never see the C# code — they just get a fast, reliable ticket queue and reply endpoints.

Production-style code

dotnet publish -c Release -o ./publish
# Deploy publish folder to server or container

What happens in production: In Freshdesk-style ticket API, getting .NET 8 and .NET 9 Features right means support agents trust the ticket queue and reply endpoints every day.

Lesson example (start here)

Copy this smaller example first. Once it works, compare it with the real-world code above.

dotnet publish -c Release -o ./publish
# Deploy publish folder to server or container

Line-by-line walkthrough

How it works (big picture)

• Study the example line by line.
• Each part connects to .NET 8 and .NET 9 Features.
• Edit one line, save, run dotnet run, and see what changes.

Do this on your computer

1. Run dotnet publish locally.
2. Follow the lesson deploy steps for your target.
3. Open the live URL and test one API or page.
4. Read the real-world section and name which part of the app uses this topic.
5. Run the example locally with dotnet run and confirm the same behavior.
6. Change one value in the example (route, text, or connection string) and predict what will happen before you save.

Experiments — try changing this

• Change a string or route in the example and save — watch the browser or Swagger response update.
• Break the code on purpose (remove a semicolon), read the error message, then fix it.

Remember

You learned what .NET 8 and .NET 9 Features is and when to use it in ShopNest. Practice by changing the example yourself. Use the Next link when you can explain it in your own words.

Common questions