Business-IT alignment (BITA) addresses the nature of connection between business activities, enterprise architecture (EA) and software technology. Luftman's strategic alignment maturity model suggests usage of matured IT standards and approaches. This work examines improving IT approaches to EA modelling with an emphasis on improved CASE automation in EA practice. This work uses Zachman framework (ZF) as a representative EA technology and compares the capability of UML and agent oriented models to provide ZF grid cell models with various EA diagram kinds using criterion such as maintain the syntactic and semantic continuity across grid cell models of each columns of ZF. This work argues the 'agent oriented modelling' technology provides better business model aligned modelling taxonomy and model diagram kinds that improves maintainability and CASE automation in ZF leading to improved EA practice environment. Agent abstraction is also shown to satisfy the information requirements of manufacturing industry oriented ISO 19440/19439 standards.