Planning & control software is still surprisingly long-lasting. The typical lifespan is 10 years or more, and 20 years is not unusual. What is the reason for this longevity? One answer may be that, since the online and interactive processing techniques were introduced, no new hardware or software technology has become available that would simplify or add to the way the user works sufficiently to justify the cost of such a change. Indeed, a change of hardware or software is both expensive and full of risks: for integrated packages, in particular, it would affect every operational order processing system — and thus a large number of users and a wide range of computer-aided processes. Any mistakes would immediately have a detrimental effect on the company’s ability to add value and thus to do business. In addition, the logistics software developers who have recently entered the market take too little notice of the logistics specialists, with the result that packages created using the latest technology have inadequate data models and functionality.