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If you can recall our blog on software development models, you already know what Agile and Waterfall models are. Yes, these are the two most widely used software development models. These models specify the various stages of the development process and order in which they need to be carried out. But these aren’t the only two models. There are several other models with different functionalities and objectives. Here are some top-ranked ones are:
The selection of a model is a crucial step in software development. This is because, based on the model, the testing and development processes are executed. A golden rule states that look at your project requirements and choose accordingly. That’s it. In today’s article, our prime models are Agile and Waterfall. The sole reason for this is that it uses these in over 70% of businesses. An eye-catchy statistic about Agile & Waterfall
We base the Agile method on an incremental + iterative process where the project requirements change frequently. In this, it uses regular customer feedback for developing better software. While using the Agile model of testing, continuous testing is important at every iteration. Hence, scaling up of products is easy in this.
Agile model in Software Engineering
“Agile model of operation” refers to an approach to software development focused on iterative development. … Each iteration requires a team going through a complete life cycle of software development, including preparing, evaluating specifications, design, coding, and testing before the client is shown a working product.
The Waterfall model is a contrast to the Agile model. While the Agile model follows an incremental and iterative approach, the waterfall follows a sequential and linear approach.
Waterfall Model in Software Engineering
The basic software development life cycle model is the classical waterfall model. It is really straightforward but idealistic. This model was very popular before, but it is not used nowadays. It is very significant, however, that all the other life cycle models of software development are based on the classical waterfall model. Hence, because of this, the requirements don’t change once the process gets started. This is both an advantage and disadvantage of this model. In this, it does not use customer feedback at any stage of the development process. Plus, scaling up of projects is difficult in this case.
Although both the models have their pros and cons, it is difficult to choose one among them. While the Agile model fits for large projects, the same doesn’t hold in the Waterfall’s case. Hence, project requirements and project size are the two factors to look at while choosing one.
Also Read: Agile Testing Methodology