Waterfall is plan driven — fixed requirements, estimated time and resources.
Agile is value driven — fixed time and resources, prioritized features.
“Would you rather have 100% of your features 80% complete or 80% of your features 100% complete?”
Waterfall is plan driven — fixed requirements, estimated time and resources.
Agile is value driven — fixed time and resources, prioritized features.
“Would you rather have 100% of your features 80% complete or 80% of your features 100% complete?”
Perhaps most importantly, when would you like your features? Don’t ask me to show the maths but I do know that the ROI hit due to less features, sooner can be an order of magnitude less than the ROI hit due to more features, later.
If you want the maths, I know a man that can – Roger Davies, founder of http://www.impactdynamics.co.uk/
… and I meant to add, at what cost?
That, of course, is a good thing to make explicit. Hitting the date, in most people’s mind, is always the implicit requirement. Of course, most folks like having a go at doing ALL of the iron-triange instead of just two.