Modern software applications often need to support multiple frontend UI like Web, Android, IOS, TV, and VR, each with unique requirements. Traditionally, developers have dependent on a single backend to serve all clients. However, the complexity of serving different frontends needs using a monolithic backend can result in performance bottlenecks, complicated APIs, and unnecessary data interactions.

The Backend for Frontend (BFF) architecture helps answer these challenges by creating a dedicated back-end service for each frontend type. Each BFF is dedicated to a specific UI kind, improving performance, UX, and overall system stability and maintainability.