Although many B2B e-commerce suppliers claim to be integrated, most web stores are interfaced. With integrated e-commerce, the software solution is installed on top of the back-end system. This means that the connection between the business logic and database of a back-end system is set up manually. Information that is available in the back-end system is being duplicated into the e-commerce software. An interfaced e-commerce software product thus has their own database and business logic that are being synchronized constantly through a connection to a certain back-end system.