It has been specifically designed for your particular requirements and can be tailored to fit in exactly with the way that your business or organisation wishes to operate.
It can be customised to interface with other software that you operate with the potential to provide you with a fully integrated IT infrastructure across your whole organisation.
The software can be tuned to your specific needs thus providing you with performance benefits that are just not feasible with packaged software.
Users will usually find it easier and more intuitive to use as it should not contain unnecessary or superfluous facilities and should operate in the way that they are used to working.
It can incorporate business processes that are specific to you and which do not exist in any packaged solution.
It is flexible and can be modified and changed over time as your requirements and business practices change.