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Functional vs. Non Functional Requirements - GeeksforGeeks

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Requirements analysis is an essential process that enables the success of a system or software project to be assessed. Requirements are generally split into two types: Functional and Non-functional requirements. functional requirements define the specific behavior or functions of a system. In contrast, non-functional requirements specify how the system performs its tasks, focusing on attributes like performance, security, scalability, and usability. Table of Content These are the requirements that the end user specifically demands as basic facilities that the system should offer. All these functionalities need to be necessarily incorporated into the system as a part of the contract. Examples: These are the quality constraints that the system must satisfy according to the project contract. The priority or extent to which these factors are implemented varies from one project to another. They are also called non-behavioral requirements. They deal with issues like: Examples: These are basi

Functional and Non Functional Requirements - GeeksforGeeks Courses Tutorials Interview Prep Software Engineering Tutorial Software Development Life Cycle Waterfall Model Software Requirements Software Measurement and Metrics Software Design Process System configuration management Software Maintenance Software Development Tutorial Software Testing Tutorial Product Management Tutorial Project Management Tutorial Functional and Non Functional Requirements Last Updated : 11 Apr, 2026 Requirements analysis is a crucial phase in software development where the needs and expectations of users and stak

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