In systems engineering , information systems and software engineering , the software development life cycle SDLC , also referred to as the application development life-cycle , is a process for planning, creating, testing, and deploying an information system. A systems development life cycle is composed of a number of clearly defined and distinct work phases which are used by systems engineers and systems developers to plan for, design, build, test, and deliver information systems. Like anything that is manufactured on an assembly line, an SDLC aims to produce high-quality systems that meet or exceed customer expectations, based on customer requirements, by delivering systems which move through each clearly defined phase, within scheduled time frames and cost estimates. To manage this level of complexity, a number of SDLC models or methodologies have been created, such as waterfall , spiral , Agile software development , rapid prototyping , incremental , and synchronize and stabilize.
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This chapter provides a sketch of the traditional method of project management. The model that is discussed here forms the basis for all methods of project management. Later chapters go into more depth regarding a model that is particularly appropriate for IT-related projects. Dividing a project into phases makes it possible to lead it in the best possible direction.
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Imagine you have a fascinating business idea. In developing an IT product, an idea is not enough. You will need a specialist, who will define high-level business goals and outline initial requirements for the project's implementation. Does this sound too difficult? Keep calm.
Software development is the process of conceiving, specifying, designing, programming , documenting , testing , and bug fixing involved in creating and maintaining applications , frameworks , or other software components. Software development is a process of writing and maintaining the source code , but in a broader sense, it includes all that is involved between the conception of the desired software through to the final manifestation of the software, sometimes in a planned and structured process. Embedded software development , that is, the development of embedded software , such as used for controlling consumer products, requires the development process to be integrated with the development of the controlled physical product.