What did the backend look like on your last project from a frontend developer's perspective?

From a frontend developer's perspective, the backend was a set of RESTful APIs that provided data in JSON format. JWT tokens were used for authentication, which the frontend transmitted in request headers.

The backend handled business logic and data validation, while the frontend was responsible for display and user interaction. In some cases, WebSocket was used for real-time data updates.

Thus, the frontend was separated from the backend through well-defined APIs, which simplified development and testing.