Bitter experience has highlighted is the importance of testing before going into production with any system. This goes double (if not ten times) when deploying brand new software, as can often been the case. When the professional services and consultants clocks are ticking, at the rate of tens of thousands of pounds/euros/dollars a week, its tempting to cut them loose and go-live without completing testing as rigorously or comprehensively as warranted. This is a false economy though, and as with many things, its easy to launch in haste and regret it at leisure. The three most important considerations of any system launch? Testing, testing, testing!