Any enterprise that requires a fair amount of working with content is a likely candidate for Drupal and because it is so easily extended and flexible there aren’t any real limitations.

RAD stands for rapid application development. With this methodology you use structured techniques, and prototyping to set your requirements, get prototypes quickly and use minimal planning. It's essentially one process that wraps several stages into one (requirements, design and possibly even the development processes.) It's close to the agile mathod but the main difference is the use of prototyping.

When using open source systems, you can use thousands of features simply by turning them on. You don't have to create the code for the functions you need, just activate them; saving time and money. It's pretty cool stuff. But, the benefit in using open source systems can also be a big challenge when it comes to coordination different aspects of a project. Not everything exists in harmony- even when it is easy to turn on or off- and project planning/development methodologies can mean the difference between reaching your goal and just not.

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