The Waterfall methodology is a software development methodology that is based on the sequential-linear approach of software development. In the case of the Waterfall model, all the software development activities are divided into different phases namely – Requirement Gathering & Analysis, System Design, Implementation, Testing, Deployment, and Maintenance. All these phases are performed sequentially in the given order.
Whereas Agile Methodology is based on an incremental-iterative approach where the requirements of the complex projects are divided into smaller iterations involving collaboration between the different stakeholders of the project. In each iteration, a deliverable is developed, tested and demonstrated to the client.
Agile vs Waterfall
|The waterfall methodology is sequential and linear.||Agile methodology is incremental and iterative.|
|Requirements have to be frozen at the beginning of SDLC.||Requirements are expected to change and changes are incorporated at any point.|
|The working model of software is delivered at the later phases of SDLC.||The working model is delivered during the initial phases and successive iteration of the model is delivered to the client for feedback.|
|It is difficult to scale-up projects based on waterfall methodology.||Scaling up of products is easy because of the iterative approach.|
|Customers or end-user doesn’t have a say after the requirements are frozen during the initial phases. They only get to know the product once it is built completely.||Frequent customer interaction and feedbacks are involved in agile methodology.|
|Waterfall requires formalized documentations.||In agile documentation is often neglected and a working prototype serves as the basis for customer evaluation and feedback.|
|Testing is performed once the software is built.||Continuous testing is performed during each iteration.|
This completes our tutorial of the difference between Waterfall and Agile methodology. You can also refer to our other related tutorials on Agile-