Agile and Waterfall Methodology

10 Differences Between Agile and Waterfall Methodology

Posted on January 28, 2016

The traditional waterfall methodology for software development is rapidly losing its popularity as Agile methodology is now being increasingly adopted by companies worldwide for software development.

Waterfall basically is a sequential model where software development is segregated into a sequence of pre -defined phases – including feasibility, planning, design, build, test, production, and support. On the other hand, Agile development methodology follows a linear sequential approach while providing flexibility for changing project requirements, as they occur.

Here are the top 10 differences between Agile and Waterfall Methodology:

  1. The software development process is divided into different phases in the Waterfall model while Agile methodology segregates the project development lifecycle into sprints
  2. Waterfall is a structured software development methodology, and often times can be quite rigid, whereas the Agile methodology is known for its flexibility
  3. According to the Waterfall model, software development is to be completed as one single project, which is then divided into different phases, with each phase appearing only once during the SDLC. However, the Agile methodology can be considered as a collection of many different projects, which are nothing but the iterations of the different phases focusing on improving the overall software quality with feedbacks from users or the QA team
  4. If you want to use the Waterfall model for software development, then you have to be clear with all the development requirements beforehand as there is no scope of changing the requirements once the project development starts. The Agile methodology, on the other hand, is quite flexible, and allows for changes to be made in the project development requirements even after the initial planning has been completed
  5. All the project development phases such as designing, development, testing, etc. are completed once in the Waterfall model while as part of the Agile methodology, they follow an iterative development approach. As a result, planning, development, prototyping and other software development phases can appear more than once during the entire SDLC
  6. One of the major differences between Agile and Waterfall development methodology is their individual approach towards quality and testing. In the Waterfall model, the “Testing” phase comes after the “Build” phase, but, in the Agile methodology, testing is typically performed concurrently with programming or at least in the same iteration as programming
  7. While Waterfall methodology is an internal process and does not require the participation of customers, the Agile software development approach focuses on customer satisfaction and thus, involves the participation of customers throughout the development phase
  8. The Waterfall model can be regarded as a stringently sequential process, however, the Agile methodology is a highly collaborative software development process, thereby leading to better team input and faster problem solving
  9. The Waterfall model is best suited for projects which have clearly defined requirements and in which change is not expected at all, while Agile development supports a process in which the requirements are expected to change and evolve. Thus, if you are planning to develop a software that would require frequent overhauls and has to keep up with the technology landscape and customer requirements, Agile is the best approach to follow
  10. The Waterfall model exhibits a project mindset and lays its focus strictly on the completion of project development, while Agile introduces a product mindset that focuses on ensuring that the developed product satisfies its end customers, and changes itself as the requisites of customers change

Flatworld Solutions is a world-class company offering custom software development services at highly affordable rates. If you are seeking a reliable partner for outsourcing software development, contact us right now and our executives will get in touch with you to discuss your project requirements.

Interested to know more?

The following two tabs change content below.

17 thoughts on “10 Differences Between Agile and Waterfall Methodology

  1. David Murray

    Very intuitive as an explanation between each as they apply to project development but in some instances, depending on the technology in which the project relates, I’m not sure Agile can be used on all instances.

  2. raushan kumkar

    I was always try to get clarification on the Waterfall Model and Agile method of Project Management but unable to understand from other portal.But today i get my 100% understanding towards above methodology.
    Now i am very confident to attend my upcoming interview and give the proper answer to interviewer.
    I hope you will mentioned your view upon some other important topics.

    Thank you so much for this tutorial.

  3. Pugazhedhi

    It is very useful and easy to understand… Keep posting similar kind of articles for who new to this domain or wiling to learn new skills.

  4. VG

    Turns out Agile is far less secure than waterfall, in that the QA cycle leaves out much of what was tested in previous module sin order to get the code, Whitehat security states “For every 100KLOC (100 thousand lines of code), a monolithic application will have an average of 39 vulnerabilities whereas a microservice application will have an average of 180 vulnerabilities. You read that right. According to the data gathered from WhiteHat Security’s 2018 Stats Report, the transition of enterprise monolithic applications to distributed microservices architectures is actually increasing the overall average of total vulnerabilities”
    With that context, it sure makes the list above look like marketing an excuse for insufficient QA models.
    The other piece left out above in the article, is that training and documentation are, from the experience of many – lacking or non-existent. But hey, you’ll save time, and only the customer will be less secure, not your problem anymore, on to the next startup gig I’d venture guess.


Leave a Reply

Your email address will not be published. Required fields are marked *

nine + = twelve