What is the underlying structure of a web application and how is it implemented

The architecture of a web application is usually based on a client-server model. The client (browser) sends requests to the server, which processes them and returns responses (such as HTML pages, JSON data).

The implementation includes several layers:

• Client-side (Frontend) — responsible for displaying the interface and interacting with the user. Usually implemented using HTML, CSS, JavaScript.
• Server-side (Backend) — handles the application logic, database operations, authentication, etc. Implemented in various languages (Java, Python, Node.js, etc.).
• Database — stores the application's data.

An example of a simplified web application structure:

Client (browser) <--> Web server (request processing) <--> Database

In a DevOps context, it is important to ensure automated deployment, monitoring, and scaling of these components.