What are the different types of waterfall models

Posted on 2009-04-16
Last Modified: 2013-11-12
Dear Experts
Which type of waterfall model is this called
Question by:matrixrasta
    LVL 28

    Expert Comment

    The following page should be the good start

    Author Comment

    I'm sorry but thats the first answer in Google I know the waterfall diagram is sequential, but I need to know what the official name for a waterfall diagram that gives one the loop back possibility.
    (The official name that is)
    LVL 28

    Accepted Solution

    Sorry. My eye answered "waterfall" and not the picture ;)

    I do not think it is any kind of the waterfall model. Even though it is drawn as if it was waterfall, the backward arrows do not fit with the model. Also the phases look like more abstract. It seems to me that it is related to "more stragegic" level. I am not the expert in the area.

    You may try to look at,

    Could you possibly write more details, some context of the question?
    LVL 12

    Assisted Solution

    Hmmm... perhaps (though drawn differently) it is implying the Spiral Model:

    The ultimate evolution from the water fall is the spiral, taking advantage of the fact that development projects work best when they are both incremental and iterative

    Featured Post

    IT, Stop Being Called Into Every Meeting

    Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

    Join & Write a Comment

    Pretext and Context In previous  (, I designed the data model of a basic Identity Management…
    Hi everyone! This is Experts Exchange customer support.  This quick video will show you how to change your primary email address.  If you have any questions, then please Write a Comment below!
    Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

    746 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    15 Experts available now in Live!

    Get 1:1 Help Now