Here are the first two in a series of YouTube videos featuring Raja from ProXL Consulting. Raja does a great job defining waterfall and describing the challenges or waterfall along with the false assumptions inherent in defenses I've heard of Waterfall methodologies.
Video 1: Introduction to the Waterfall Model
Video 2: Problems of Waterfall
Video Link: http://www.youtube.com/watch?v=Q8G15OVRSvU
Highlight: Issues of Traditional Software Development
- Unclear Requirements
- Requirements Change
- Lack of Customer Involvement
- Accuracy of Estimation
- Uneven Loading of the Resources
- Last Minute Corrections are Difficult
- Not much time for Testing
- Lots of Documentation
- Schedule and Cost Overruns
- Lots of late Nights Prior to Final Delivery
- Unhappy Customers
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