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List Of The Widely Used Software Development Models, With Pros and Cons

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Through the comprehensive study of the Software Development Life Cycle (SDLC), software development isn’t as simple as its definition. For the benefit of software developers, there are a vast number of software development models/methodologies available today. 

All these models help the developers with their project-based work. Hence, today’s article is all about the top-ranked software development models along with their pros and cons. So, let’s start!

Waterfall Model

Just like a waterfall never goes back from where it starts, the same goes with this old Waterfall model. This model simply states that first, complete the existing stage then proceeds further. 

So, there is no way to look back at the previous stage. This model is easy to understand and implement. Just concentrate on one stage at a time. 

But, this Waterfall model causes certain problems. First, any sort of delay at any stage leads to delay at the other stages too. There are no or fewer chances to look back at the previous stage. The only possibility for revision occurs once the developer reaches the maintenance stage. 

Hence, this model is unfit for projects that possess flexibility.

V – Shape Model

In this model, ‘V’ stands for ‘Verification’. This V-Shape model is like a subset of the previous Waterfall Model. 

In this model, the next stage remains inaccessible until the previous stage is done. The developers feel comfortable with this model if there are no prior requirements regarding the project. 

So, just like the Waterfall model, the only con of the V-Shape model lies because this model is suitable for less flexible projects.

Iterative Model

This Iterative model is unique from the previous two models. Instead of moving with the known requirements, you begin with a unique set of requirements, test it, test for any bugs/defects, and apply another set of requirements. 

As a result, a different version of the software is produced at every phase. Hence, this is called an Iterative Model. 

Talking about the pros, the overall implementation cost is the minimum. Since we repeat the same process and again, the shortage of resources occurs.

Spiral Model

Just imagine the flexibility of a spiral. Similar flexibility is common with this Spiral Model. This model is an updated version of the Iterative Model. 

In this model, the running project ‘spirals’ through four phases until completed. Hence, multiple retirements are possible with this model. This is its first advantage. 

The second advantage of this model is that highly customizable and flexible projects are possible with ease. Moreover, valuable customer feedback(s) can be implemented at the beginning itself.

This model has a solitary disadvantage that sometimes, the project may continue running in the spiral for a long time. 

Hence, the time consumption increases in that case.

Big Bang Model

Although this model is not much in SDLC, this is suitable for small projects. 

This model works well with a team of 2-3 engineers. The most vital stage towards SDLC is planning, and in this model, the least time is present for planning only. There is no particular process at the starting point. 

So, now it’s clear that for complex and large-sized projects, this model is not suitable. This model involves the high risk at every stage, especially at the beginning stage. 

So, there runs a risk of starting the entire process again.

Agile Model

Last but not least, this agile model is what every software developer must consider first. This model provides the most realistic approach in software development. 

With the help of this model, you can quickly deliver the end product that too, of high-quality. This model functions well when all three customer, developer, and tester works hand in hand. 

But, this point contributes to one of its disadvantages. Since at every stage, customer interaction is vital, in case of any uncertainty at the customer end, the entire process may suffer.

So, these 6 are the most utilizable Software Development Life Cycle (SDLC) methodologies/models. 

The selection of a model depends on the project complexity, flexibility, and the processes via which we implement the project.

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