During construction, the actual system is built. Building a successful information system requires a set of activities: programming, testing, and documenting the system. In today's global economy, cultural issues also play an important role in managing these activities. Installing an information system requires switching from the current system to the new system. This conversion process can be quite involved; for example, cultural differences among the users, the development team, and the two groups can be quite challenging. Furthermore, not only does conversion involve shutting the old system down and turning the new one on, it also can involve a significant training effort. Finally, operating the system may uncover additional requirements that may have to be addressed by the development team.