When the phase of development and implantation of system is finished, usually is essential to guarantee the maintenance of this software. Software applications has to be modified in time because the business rules can change or it could be necessary to adapt the program to the modifications of laws or the changes in technologies. For this reason is advisable to trust in a company that gives a continued maintenance service.

Furthermore, it will be convenient to make consults about the use of the program or to require training for the users of the system.

This service can be applied only when the professional or the company that was giving this maintenance service, stops this activity for any reason.

An example would be an application maintained by an employee or free lance that leaves this activity or changes of company. Or the case of an application developed by a company that leaves this activity.

In all these cases is essential that your company is the owner of the program sources or well that the manufacturer of the program authorises expressly this service.