Systems analysis and design

Systems analysis and design, an interdisciplinary part of science, may refer to:


 * Systems analysis, a method of studying a system by examining its component parts and their interactions
 * Structured data analysis (systems analysis), analysing the flow of information within an organization with data-flow diagrams
 * Systems design, the process of defining the architecture, components, and data of a system to satisfy specified requirements
 * Object-oriented analysis and design, an approach to analysis and design of an application, system, or business that emphasizes modularity and visual modeling
 * Service-oriented analysis and design, a method of service-oriented modeling to design business systems
 * Structured analysis, methods in software engineering for converting specified requirements into software programs and hardware configurations
 * Structured systems analysis and design method, a systems approach to the analysis and design of information systems