"In systems engineering and software engineering, requirements analysis focuses on the tasks that determine the needs or conditions to meet the new or altered product or project."
A process of identifying, documenting, and validating the requirements of the system to ensure it meets the needs of the stakeholders.
Systems Engineering: An interdisciplinary field of engineering that focuses on designing and managing complex engineering systems over their life cycle.
System Requirements Engineering: The process of eliciting, analyzing, specifying, validating, and managing the requirements for a system.
Requirement Elicitation Techniques: The various methods used to obtain user, customer, and stakeholder requirements for a system.
Requirements Analysis: The process of examining, modeling, and evaluating system requirements to ensure completeness, consistency, and correctness.
Functional Requirements: Descriptions of what the system must do or perform to meet user, customer, or stakeholder needs.
Non-Functional Requirements: Descriptions of the system's quality, performance, security, and other characteristics that are critical to its success.
Requirements Validation Techniques: Activities that ensure the requirements are valid, complete, and consistent with the system's goals and objectives.
Requirements Management: The process of managing changes to the requirements throughout the system's life cycle.
Stakeholder Management: The process of identifying, analyzing, and managing the interests, needs, and perspectives of all stakeholders in the system.
System Modeling: The process of creating representations of the system using models, diagrams, and other visualization tools.
Traceability and Impact Analysis: The process of tracing requirements to their sources, managing changes to requirements, and assessing the impact of those changes on the system.
Use Cases: A technique for capturing system requirements by identifying interactions between users and the system.
User Stories: A technique for capturing requirements by writing short and simple statements that describe what users need from the system.
Agile Development: An iterative and incremental approach to software development that emphasizes adaptive planning, evolutionary development, and flexible response to change.
System Testing: The process of validating the system's requirements and functionality through comprehensive testing methods.
Functional Requirements Analysis: Defines system capabilities and how it should behave.
Non-functional Requirements Analysis: Defines system constraints, quality attributes (e.g. performance, reliability, security), and system operational characteristics.
User Requirements Analysis: Identifies needs of system users.
Business Requirements Analysis: Identifies needs of the business, stakeholder goals, and provides business context for the system.
Use Case Requirements Analysis: Analyzes user interactions with the system.
Structural Requirements Analysis: Analyzes system components, structure, and how they interact.
Interface Requirements Analysis: Identifies system interfaces, inputs and outputs.
Data Requirements Analysis: Identifies system data requirements and how the data will be stored and processed.
"...taking account of the possibly conflicting requirements of the various stakeholders."
"Analyzing, documenting, validating and managing software or system requirements."
"Requirements analysis is critical to the success or failure of a systems or software project."
"The requirements should be documented..."
"...actionable, measurable, testable, traceable, related to identified business needs or opportunities..."
"...defined to a level of detail sufficient for system design."
"In systems engineering and software engineering..."
"...the various stakeholders."
"...the possibly conflicting requirements of the various stakeholders."
"...managing software or system requirements."
"...validating software or system requirements."
"Requirements analysis is critical to the success or failure of a systems or software project."
"...related to identified business needs or opportunities."
"The requirements should be actionable..."
"...measurable..."
"...traceable..."
"...testable..."
"Analyzing, documenting, validating and managing software or system requirements."
"The requirements should be documented..."