“…The management approach of enterprise architectures (EA) from TU Lisbon [156,157,158,43,158,19,159,40,21,20,18,41,115,167] is about modeling information system architectures (ISA) and about the modeling method itself. The approach uses a high-level meta-model, the CEO framework, and renes this into ve views as there is an organizational view, a business view, an information view, a system's application view and a system's technological view.…”