Waterfall Method vs. Iterative Model

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Big Bang finish can be difficult for users. (W/I)

waterfall method

Can be difficult to change the design. (W/I)

waterfall method

Each stage is well documented. (W/I)

waterfall method

Easier to schedule. (W/I)

waterfall method

No customer feedback. (W/I)

waterfall method

No finished product until the very end. (W/I)

waterfall method

Requires very stable requirements. (W/I)

waterfall method

Simple methodology good for short projects. (W/I)

waterfall method

Unidirectional. (W/I)

waterfall method

When things fall behind schedule, the implementation and testing teams lose time. (W/I)

waterfall method

Waterfall Method: Step 4

testing

Waterfall Method: Step 1

requirements

Waterfall Method: Step 5

deployment & maintenance

Waterfall Method: Step 2

design

Waterfall Method: Step 3

implementation

Allows constant reflection on the process and team. (W/I)

iterative model

Allows customer feedback and requirements changes. (W/I)

iterative model

Allows for feedback. (W/I)

iterative model

Allows more flexibility. (W/I)

iterative model

Break the project up into small iterations. (W/I)

iterative model

Costs are harder to predict. (W/I)

iterative model

Documentation requires more flexible and experienced employees. (W/I)

iterative model

Encourages modularity. (W/I)

iterative model

Keeps the customer constantly involved. (W/I)

iterative model

More difficult to schedule and manage. (W/I)

iterative model

Multi-stage delivery easier on users to adapt. (W/I)

iterative model

Requires a lot of customer interaction. (W/I)

iterative model

Requires more flexible and experienced employees. (W/I)

iterative model


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