1. What is agile?
There are four principles that are typically used to highlight the difference between
agile and waterfall approaches to project management:
■ Customer collaboration over contract negotiation.
■ Individuals and interaction over process and tools.
■ Responding to change over following a structured plan.
■ Prototyping/working solutions over comprehensive documentation.
The result is a rather different balance of the ‘Iron Triangle’: ‘waterfall’ will tend to treat
scope as the driver and calculate the consequential time and cost; ‘agile’ commits
set resources over limited periods to deliver products that are developed over
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