Why the OPC server is so important in the company operation or systems? It is important to note that some OPC specifications are published; others are available only to member of the OPC foundation. So whilst no company "owns" OPC and anyone can develop an OPC server, whether or not they are a member of the OPC foundation, non-members will not necessarily be using the latest specifications.

Anyone can integrate OPC products, and there is no pre-requisite for the system integrator to belong to any organization. It is therefore up to each company that requires OPC servers to ensure that their products are certified and that their system integrators have the necessary training. Hence, the OPC server is a crucial element for computer system in company.