This report details the system integration engineering approach for IT transformation at Dell, breaking down the system into manageable components and identifying links between systems. It includes a conceptual architecture model with system context and architecture overview diagrams, a logical architecture diagram focusing on technical functionality and universal standards, and a component model demonstrating relationships between logical models through component relationship, description, and interaction diagrams. The operational model distributes components to different geographical locations, depicting data flow and connections. The report concludes that the development of enterprise architecture models facilitates the identification of the current information system at Dell and outlines the standards and capabilities needed for transformation, emphasizing the importance of architectural overviews and component models in translating concepts into information systems and testing them effectively.