The users work in only one system. Accessing several isolated systems is not necessary to get a current overview and/or to carry out activities. Therefore the risk of “working parallel” where no department knows what the other is doing is a lot lower. Apart from that the data is much more transparent and their plausibility can more easily be corroborated
Having all available information at only one location saves on computer storage space (and costs). Additionally the multiple upkeep of data, when these are newly created, changed or deleted is avoided. This reduces the proneness to errors and leads to a higher data consistency.
Interfaces always lead to a time lag. Therefore a situation can have changed during the transfer from one system to the other without the user noticing. Working in a uniform solution with real time date minimises this risk.
At any time every process participant can see which part of the process is currently being worked on or which activities are currently being conducted. Interdependencies are also a lot more transparent so that the possible consequences of measures can be better estimated.
An integrated solution allows faster statements to current numbers and developments. For example all preparation activities necessary to make the data comparable between systems (for example when using different material numbers) are omitted. It is also no longer necessary to elaborately „glue together“ an analysis through various applications. Critical processes can therefore be identified far earlier and necessary counter measures can be taken.
In the case of a software update in a heterogeneous IT landscape it must always be checked whether it can lead to conflicts with other systems in use. Possibly interfaces have to be newly configured and implemented. Also updates naturally happen quite often. This too repeatedly ties up resources which are then not available for the usual operations.