CMDB canâ€™t be done. Not as ITIL defines it. At least not with a justifiable return on the investment of doing it - it is such an enormous undertaking that any organisation attempting it is going to burn money on an irresponsible scale. The truth about CMDB is no secret. It is a â€œdead elephantâ€: a great putrescence in the corner of the room that everyone studiously ignores, stepping around it and ignoring the stench, because life will be so much simpler if they do not acknowledge the obvious.