Software Go-Live is always a big event for any software product. It is important to absolutely make sure that everything works and that we are releasing quality software to the users.
A bad or premature or unstable or difficult to use product can cause a lot of losses financially and could also make the user lose trust in the brand itself.
Often times, we hear that testing should be done until we meet the exit criteria. We also hear that defects have to be fixed to an acceptable level.