Summary  
This chapter covers building server-side applications that handle HTTP requests, implement APIs using Express, and integrate with a database for data management.  

General domain of usage  
Web application backends

You have built a complete foundation in backend development.

You started with JavaScript, learned how to run code on a server, built APIs with Express, and connected your application to a real database using MongoDB.

At this point, you understand how modern backend applications work. You can handle requests, process data, and build APIs that store and manage real information.

You now have the skills to start building your own backend projects and continue growing as a developer.

Learn how to store and manage data in backend applications using MongoDB and Mongoose. Connect your Express API to a database and perform create, read, update, and delete operations. Build real data-driven backend functionality and move beyond in-memory storage.

Final Words