A software development is the process of dividing software development work into distinct phases to improve design, product management, and project management. It is also known as a software development life cycle (SDLC). Top 5 Software Development Methodologies may include the pre-definition of specific deliverables and artefacts that are created and completed by a project team to develop or maintain an application.
According to a study, it is found that the number of Software Development Companies in USA is largest, but India holds maximum number of talented software engineers. Most modern development processes can be vaguely described as agile. Other methodologies include waterfall, prototyping, iterative and incremental development, spiral development, rapid application development, and extreme programming.
Software Development Methodologies
- Incremental and Iterative
- Agile and Scrum
5 Software Development Methodologies in detail:
#1. Waterfall model:The waterfall model is a sequential approach, where each fundamental activity of a process represented as a separate phase, arranged in linear order. Read Also: 7 Stages of the Software Development Life Cycle (SDLC)
When To Use?In principle, the waterfall model should only be applied when requirements are well understood and unlikely to change radically during development as this model has a relatively rigid structure which makes it relatively hard to accommodate change when the process in underway.
- It is considered as the traditional method of explaining software development process.
- It is also known as linear sequential life cycle model.
- In this model the next phase in the development process won’t begin until and unless the previous phase is completed. The phases don’t overlap each other.
- It is best suitable where requirements are predictable and stable.
- It is best suitable for small projects.
Advantages and Disadvantages-:
#2. V-Shaped model:An extension of the waterfall model, this SDLC methodology tests at each stage of development. As with waterfall, this process can run into roadblocks. What it is: The V-shaped software development process is a take on the classic Waterfall method that makes up for its biggest downfall: A lack of testing. Who it’s for: Teams working on smaller projects with a tight scope. Who it’s not for: Teams who want more flexibility and early input from users. Phases:
- High-level design
- Low-level design
- Unit testing
- Integration testing
- System testing
- Acceptance testing
- It is considered as an extension of Waterfall model.
- It is also termed as Verification and validation model.
- Every phase in developmental cycle is supported with testing phase.
- It is best suitable for projects where technology and requirement is stable. The major difference between v-shaped model and waterfall model is the early test planning in v-shaped model.
Advantages and Disadvantages:
#3. Spiral Method:
- It is a composite of Waterfall Model and Iterative Model.
- Each phase of the software development process leads to the formation of spiral with many loops.
- It is favorable for broad, premium and complicated projects.
- Each phase is marked with and ends with client examining the project.
Advantages and Disadvantages:
#4. Iterative and incremental Model:They’re suited for large projects, less expensive to the change of requirements as they support customer interactions with each increment. Initial versions of the software are produced early, which facilitates customer evaluation and feedback. Read Also: Ways To Crank Up Speed In Software Development What it is: The incremental and iterative software development processes are a middle-ground between the structure and upfront planning of the Waterfall process and the flexibility of Agile. While both follow the idea of creating small bits of software and exposing them to users for feedback, they differ in what you create during each release.
- It is developed to overcome the weaknesses of the waterfall model.
- It starts with an initial planning and ends with deployment with the cyclic interactions in between. The basic idea behind this method is to develop a system through repeated cycles (iterative) and in smaller portions at a time (incremental), allowing software developers to take advantage of what was learned during development of earlier parts or versions of the system.
- It consists of “mini waterfalls” cycles.
- It is used in shrink-wrap application and large system which built-in small phases or segments. Also can be used in system has separated components, for example, ERP system. Which we can start with budget module as first iteration and then we can start with inventory module and so forth.
Read Also: The Complete Guide Of Telemedicine
Advantages and Disadvantages
#5. Extreme Programming (Agile Development):What it is: The Spiral software development process combines the V-shaped process’ focus on testing and risk assessment with the incremental nature of Iterative, Incremental, and Agile. This SDLC model emphasizes repetition. Developers create a version very quickly and for relatively little cost, then test and improve it through rapid and successive versions. One big disadvantage here is that it can eat up resources fast if left unchecked. Phases:
- Risk Assessment
- Development and validation
- Evaluate results and plan next “loop”
- Its sole mission is to improve customer satisfaction and process adaptability.
- It can be used with any type of the project, but it needs more involvement from customer and to be interactive.
- Also, it can be used when the customer needs to have some functional requirement ready in less than three weeks.
- It is based on adaptive approach.
- We at Dreamsoft4u work on the same model.
Advantages and Disadvantages
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