Change placed heavy demands on IT systems. To support previous IT investments, a continuous up-date and further development of the IT systems may be needed.

Furthermore, it may be relevant to replace an existing function, add a new function, or introduce new information to adapt the system to the current business needs.

The usual system maintenance is also an important part of DCS's services. Maintenance typically comes into play in connection with system or user errors and with error corrections in the systems.