Prototyping

Prototyping

Prototyping is a relatively modern technique for gathering requirements and can work well with online developments like web solutions.

In this approach, you gather preliminary requirements that you use to build an initial version of the solution – a prototype. You show this to the client, who then gives you additional requirements. You change the application and repeat the process with the client.

This repetitive process continues until the product meets the critical mass of business needs or until you have completed an agreed-upon number of iterations.

A prototype represents the shell of an actual production application

Prototypes are built early in the development lifecycle, and they are used to provide valuable insight into the look, feel and general workflow of an application. (Sometimes people call the first production implementation a prototype, but that is not correct. If you have multiple implementations, the first one is more aptly called a pilot.)

In a traditional waterfall project, you move from analysis and design to coding and testing.

The first time the clients have a chance to look at an application is typically during the integration testing, system testing or even acceptance testing. If the business requirements are well understood up-front, this approach can still make a lot of sense.

However, on a typical project, the client does not always know exactly what he/she wants ahead of time. In this case, it can be very valuable to gather an initial set of requirements and then build a prototype that the client can see.

The client is then in a much better, and earlier, position to tell you what he/she likes and doesn’t like. Based on that feedback, you could begin to build a production application, or you could enhance the prototype a second (and third) time to hone the requirements in even finer detail.

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