What specific task defines the focus of a developer working on the backend versus the frontend of an application?

Answer

Optimizing databases and server logic.

The distinction between frontend and backend work in software development is based on where the code executes and what it serves. The frontend concerns the client-side, meaning what the user directly interacts with visually—ensuring the user interface is intuitive and fast. Conversely, the backend is concerned with the server-side operations that handle data persistence, business logic execution, and overall system efficiency. Therefore, optimizing databases and server logic is the defining responsibility for the backend developer, dealing with data processing and system performance behind the scenes.

What specific task defines the focus of a developer working on the backend versus the frontend of an application?
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