Those companies (next could be Yours) whom we work with have the same challenge:
You have a robust ERP system implemented at a reasonably high cost (as it happens to be with big out-of-the-box solutions like SAP, ORACLE, MS Navision etc.)
As life goes by the need comes for some more functionalities, or an extra module, some extra web-based features. (Some extra You need but not at the price of an ERP developer’s daily fee)
You don’t want to replace Your expensive ERP system, You do not want to spend more money on further customization for new functions either, but need to take a further step like all Your competitors! When Your company is on track it is part of the best-practice that time to time You need a feature integrated that was handled in a spreadsheet or even on paper before!