MIS/4 is an ERP (Enterprise Resource Planning) that comprises applications and solutions for marketing and planning, supply and stock management, sales and distribution, organization and production management, accounting and finance, human resource management, system of quality management and maintenance, research and development...
Architecture is similar BIS application but not the same. In start that was, but in later phase of project development very different, because it was developed of two different teams. When difference growth a lot I got task to integrate BIS and MIS4 in very short time for that task. I did it and now you can very easily integrate some other ERP system with BIS, on the other way you can easy integrate ERP with other business specific software. Here is the integration concept of MIS4: