Application Working Diagram

Blood Donation – System Architecture Diagram

A professional system architecture diagram illustrating the complete workflow of a Blood Donation Mobile Application. The diagram shows how a user's blood request, including the selected blood group and GPS location, is sent through an API to the backend server, which matches nearby eligible donors within a 5 km radius based on blood group and availability. Eligible donors receive push notifications, respond to the request, and the accepted donor's information is returned to the requester.

The architecture includes the User Mobile App, GPS/Location Service, API Gateway, Backend Server, Database, Donor Mobile App, and Push Notification Service, with clearly labeled components, directional data flow, and color-coded client-side, server-side, database, and notification layers. Designed in a clean, modern style, it is ideal for software engineering, college projects, and technical presentations.