The following points elucidate the main differences between Agile and Waterfall approach in a software cycle:
The Waterfall model is an organized method of software development where the software development process is split up into a number of phases. On the other hand, in Agile, the entire project development lifecycle is grouped into sprints. While Agile is famous for its responsiveness, the Waterfall method can often be quite inflexible.
The Waterfall approach treats software development as a single project, which is supposed to be concluded and divided into a number of phases. One phase cannot appear more than once during the software development lifecycle. On the contrary, the Agile methodology is a compilation of a variety of projects.
If you choose the Waterfall model of software development, you will not be able to modify your requirements midway through the development process. As a result, you need to be very consistent with your requirements right from the start. On the other hand, the Agile model has a high degree of flexibility where you can change your requirements whenever you want.
In the Waterfall method, the different development phases of the project are completed once they appear in the software development lifecycle, such as designing, development, testing, and so on. But in Agile methodology, the same activity can show up more than once in the development process. As a consequence, the planning, development, prototyping and other phases in the software development process can appear repeatedly.
In the Waterfall development methodology, the testing phase ensues after the building phase. But in the Agile methodology, testing and programming are mostly performed at the same time.
The Waterfall methodology is an internal process which does not require the assistance of customers. On the other hand, the software development approach of Agile puts emphasis on satisfying the customers to the fullest. As a result, it requires the customers to participate throughout all the phases of the development process.
The Waterfall approach is a strict model that focuses on the operation of a series of phases in a consistent manner. The Agile methodology, on the other hand, is a systematic software development process which requires a lot of collaboration, resulting in better solutions to problems and enhanced team spirit.