SDLC: Iterative Model

In the Iterative Model , the development starts with a small set of requirements. Once this set of requirements is completed , then a new set of requirements is implemented again . This process of implementation goes on iteratively until unless the complete set of requirements is not implemented.

In each iteration , we design , test & deploy . Every iteration has a fixed time in which it should be completed .

Here’s the diagram , representing iterations as ‘Build 1’ , ‘Build 2’ and ‘Build 3’:

Each Build (iteration) has to go through Design , Development , Testing & Deployment (Implementation as per the diagram)

Check out my blog SDLC to get the gist of the process.

When to use the model

• This model is best fit for project which are:
• Requirements are clearly defined
• Client wants working model at each iteration
• New technologies are implemented & learnt on the way
• Not availability of highly skilled team
• Highly risky project

Pros of Iterative Model

• A working model is ready in end of every iteration
• Feedback of client can be taken at each iteration
• Supports changing requirements
• Risk management is easy . Highly risky part is done first
• Suitable for large & critical projects
• Parallel development is possible

Cons of Iterative Model

• Not suitable for smaller projects
• More resources are required
• More attention of management is required
• Management complexity is more
• End of project is not defined , which can be risky
• System design or architecture issues may arise because all requirements is not gathered at the beginning

So far, we have discussed the Iterative model, it’s use cases, pros & cons.

More information on Waterfall Model is in my other blog’s, here’s the link
WaterFall Model: https://dev.to/rishabhraghwendra/sdlc-waterfall-model-307n

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Thanks for reading
Written with ❤️ & passion 🔥 by Rishabh Raghwendra