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Introduction

Non-Functional Requirements describe the constraints upon the system and software by identifying:

  1. the system's environmental circumstances,
  2. the attributes the system must possess
  3. all other constraints relevant to the system's development and implementation.

Non-functional requirements neither explain the functionality or behavior of the system nor indicate deliverables or other transitional needs.

Scope

This paper details the non-functional system requirements gathered from Charity App Project stakeholders. The stakeholders then re-evaluated and verified the criteria to confirm that they were accurate, consistent, and required.

Requirements

  • The project must run on Windows/Linux/Mac OS without any change in the codebase and infrastructure.
  • The web application must support Chrome>=104 and Firefox>=103 browsers.
  • The web application must be usable from 1024x768 to 1920x1080 screen resolution.
  • The mean time to restore the system after a failure must not exceed 20 minutes.
  • The server must be available to Iran users 95% of the time every month.
  • The app must prevent unauthorized access to all user's data.
  • All pages must have less than 4.0 seconds of Largest Contentedly Paint.