Software Development Models:
A software cycle deals with various parts and phases from planning to testing and deploying. All these activities are carried out in different ways, as per the needs. Each way is known as a Software Development Lifecycle Model (SDLC).
Software life cycle models describe phases of the software cycle and the order in which those phases are executed. There are lots of models, and many companies adopt their own, but all have very similar patterns.
An incremental model is an intuitive approach to the waterfall model. Multiple development cycles take place here, making the life cycle a ” multi – waterfall cycle. Cycles are divided up into smaller, more easily managed iterations. Each iteration passes through the requirements, design, implementation and testing phases.
A working version of the software is produced during the first iteration, so you have working software early on during the software life cycle. Subsequent iterations build on the initial software produced during the first iteration.
Advantages of Incremental model:
- Generates working software quickly and early during the software life cycle.
- More flexible – less costly to change scope and requirements.
- Easier to test and debug during a smaller iteration.
- Easier to manage risk because risky pieces are identified and handled during its iteration.
- Each iteration is an easily managed milestone.