Ensure Scalability Surveys consistently show that the average number of users on a data warehouse doubles in three months, doubles again in six months, doubles again by the first year, and then doubles again in the next six months. You often have rapid and underestimated growth. As IT, your track record of delivering what you said hasn't been that great. But this time, the project actually works and seemingly overnight you have explosive growth. We hear horror stories every day.
Performance is important.
Never underestimate its impacts. We have heard many reports of data cleansing costs going through the roof, and in most cases, it was not properly planned for. In the last few years people have finally started admitting their data is filthy. Business users have always suspected it. IT has hated to admit it.