The size of company matters when deciding the BI strategy. A large organization is very different from a small organization. In a smaller organization, one person may perform multiple tasks. The C-level executives (CEO, CFO, COO, and CMO) can be accessed relatively easily. They will be willing to spend time with the consultant during the requirement gathering session, making the exercise simpler and faster.

Compare this to a large organization, and there is a huge level of hierarchy. The C-level executives are almost impossible to be reached. The people in the lower level of the hierarchy may have different thoughts, and hence, the consultant must spend a lot of time doing the requirement gathering sessions. The subsequent phases requiring user interaction will require a lot of detailing.