Information systems are the production infrastructure of the information industry.
The Web and search engines, the computing system of the university and of your bank, the quality assurance system of a factory and the system supporting the physician who prescribes you a medicine are all information systems.
“Information technology and business are becoming inextricably interwoven. I don't think anybody can talk meaningfully about one without the talking about the other.” Bill Gates – Microsoft.
A 1995 poll found that only 16% of the information systems development projects are completed on-time, on-budget, and according to the original requirements.
Nearly a third of the projects are canceled, the main reason was found to be: failure to understand the requirements and to define them.