SDLC ITERATIVE MODEL #SOFTWARETESTING#SOFTWARE ENGINEERING

Software Development Life Cycle (SDLC) is extremely vast and full of various development and testing activities, methodologies, techniques, tools, and more. It involves intense planning and management, calculation and preparation. It is only after combining all these efforts of the software engineers that a software or application is successfully developed. Iterative Model is too a part of Software Development Life Cycle. What is Iterative Model in Software Development Life Cycle (SDLC)?: An iterative life cycle model does not start with a full specification of requirements. In this model, the development begins by specifying and implementing just part of the software, which is then reviewed in order to identify further requirements. Moreover, in iterative model, the iterative process starts with a simple implementation of a small set of the software requirements, which iteratively enhances the evolving versions until the complete system is implemented and ready to be deployed. Each release of Iterative Model is developed in a specific and fixed time period, which is called iteration. Advantages of Iterative Model: • Some working functionality can be developed and early in the software development life cycle (SDLC). • It is easily adaptable to the ever changing needs of the project as well as the client. • It is best suited for agile organisations. • It is more cost effective to change the scope or requirements in Iterative model. • Parallel development can be planned. • Testing and debugging during smaller iteration is easy. Disadvantages of Iterative Model: • More resources may be required. • Although cost of change is lesser, but it is not very suitable for changing requirements. • More management attention is required. • It is not suitable for smaller projects. • Highly skilled resources are required for skill analysis. • Project progress is highly dependent upon the risk analysis phase. • Defining increments may require definition of the complete system.