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PO
 

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    <p>While I would agree that you need to have some broad agreement with respect to the scope and cost of the system being built, I think it's grasping at straws to think that you can fully spec a system prior to getting it into the customer's hands. As you've discovered the customer very often doesn't know what he wants until he actually sees it. One way to address this is with mock ups, as you are accustomed to doing. I use them too during design and planning.</p> <p>Most often, however, you need to get the actual product into the customer's hands to get the inevitable feedback on what works and what doesn't. You're better off doing this earlier rather than later since changes that occur late in development are much more difficult and expensive, at least in traditional methods. Using an agile method that delivers working software early and often, in conjunction with just enough planning and documentation gets better customer feedback than iterating over reams of specifications for a product that the customer may find that they don't want (or at least want they way they said).</p> <p>I'd suggest that you need some documents that outline, broadly, the scope of the project. Enough so that you can agree on what is part of the system and what isn't. If you're building an inventory management application, they ought not expect to also get a customer relations management system, for example. Then, apply techniques from agile development methods to, in a lightweight manner, track the desired functionality and get some working code into their hands as early as possible and on a regular basis thereafter. This will require trust from all parties so you may want to start with small projects and timelines and build that trust up.</p>
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    1. POThe right approach to design a web application (design software, not graphics)
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    1. COAgreed 100%. +1.
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