Welcome back for our next installation in the series about different types of SDLC models.
This installation focuses on the iterative model.
The iterative process takes a smaller set of software requirements—typically featuring a subset of a software’s requirements—and evolves through the development cycle until the system is completed.
The 5 Cycles of the Iterative Model of SDLC
- Planning and Requirements First is the initial planning. This allows you to get a clear picture of the documents, software and hardware required to help you get ready for the rest of the stages. This is the stage when you determine what your project is for, why it’s necessary, and how to use the chosen SDLC model (in this case, the iterative).
- Analysis and Design After the planning stage, you move onto analyzing the necessary business logic, database models and any other elements that make up the project stage. This stage also includes the design stage. You should establish your tech requirements (including data layers, services and languages) at this time.
- Implementation Planning and analysis completed, you’ll move onto the coding and implementation phases. In this stage, you’ll take all of the planning, specs and design from the previous stages then code and implement them.
- Testing After the build iteration goes through coding and implementation, it’s time to test the procedures. This stage allows you to identify any bugs or other issues that have arisen.
- Evaluation In this last stage, it’s important to evaluate what’s been created to this point. One benefit of this stage is that it allows your team the opportunity to examine the project’s progress and decide whether there are any issues.
Advantages and disadvantages of the iterative model
- It’s possible to manage each milestone easily
- Flexible—doesn’t require a big monetary investment to change requirements
- Testing and debugging are easier in smaller iterations
- Working software is developed quickly and early in the life cycle
- Easy management in risky pieces because they’re identified early in the iteration
- Iteration phases are rigid and don’t overlap
- There can be issues with system architecture stemming from a failure to gather all requirements before the software life cycle begins
If you aren’t sure which SDLC model is right for your project, be sure to check out every installment in our ongoing series! Or simply contact the experts at Innovative Architects.