As regards the matter of systems integration, talking about authentication means both human machine authentication (i.e. user access control on the integration platform) and server to server authentication (i.e. access control to and from bindCommerce with integrated systems). 

Authentication to and from integrated systems follows different logics based on the integration methodology used. When the dialogue takes place through API provided with the system with which we dialogue (as for most marketplaces and many eCommerce CMS), authentication is normally done through tokens (variable length key). For some systems, where the integration uses proprietary bindCommerce technologies, a double check is used: through access credentials, as well as checking if the call comes from a IP address contained in the white list of enabled customers.