In information technology, system integration is the process of linking together different computing systems and software applications physically or functionally, to act as a coordinated whole. In engineering, system integration is defined as the process of bringing together the component subsystems into one system and ensuring that the subsystems function together as a system.
A system integrator brings together discrete systems utilizing a variety of techniques such as computer networking, enterprise application integration, business process management or (if nothing else works) manual programming.
When I integrate business systems for my clients, I achieve seamless systems integration by reducing or eliminating manual procedures, eliminating redundant intermediate files and employing third-party apps to interface with and synchronize systems systems. In cases where an external database needs to interface with the QuickBooks database, I use Microsoft's SQL Server Management Studio to communicate between databases. The result is a single seamless business enterprise which, for my clients, reduces cost significantly and goes directly to bottom line net profit.