11. Maintenance

Once the system has been installed and is up and running, there will be a need to keep maintaining it:

Over time, bugs will be discovered that weren't picked up in the testing. These will need to be fixed.

Staff or developers will identify parts of the system which could be tweaked to work more efficiently.

Larger changes might need to be made to the system. Perhaps extra functionality or maybe changes in working practices or the law might mean that parts of the system have to be altered.