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Enterprise architects seek to align enterprise processes and structure with their supporting IT systems so that enterprises can flourish in their environment. The enterprise architecture (EA) discipline has emerged from business best practices. EA frameworks are therefore mostly informal. As a result there is a lack of EA tools that can help enterprise(More)
To align an IT system with an organization's needs, it is necessary to understand the organization's position within its environment as well as its internal configuration. In SEAM for Enterprise Architecture the organization is considered as a hierarchy of systems that span from business down to IT. The alignment process addresses the complete hierarchy. We(More)
The early requirements of an IT system should be aligned with the organization's business imperatives. To understand these imperatives it is necessary to understand the organization's position within its environment. SEAM for Business is a method designed for analyzing the competitive environment of an organization, including its relationships with its(More)
Business and IT alignment demands clear traceability between the applications to be developed and the business requirements. SEAM is a systemic visual approach for modeling systems, including information systems and organizations. This paper illustrates how we represent the business role of an IT application and its platform-specific realization in SEAM. We(More)
Creation and transformation of visual specifications is driven by modeler's design decisions. After a design decision has been made, the modeler needs to adjust the specification to maintain its correctness. The number of adjustments might make the design process tedious for large specifications. We are interested in techniques that will reduce the(More)
Enterprise modeling involves multiple domains of expertise: requirements engineering, business process modeling, IT development etc. Our experience has shown that hierarchical enterprise models, made of an assembly of system models, are effective. In these models, two hierarchies exist: an organizational level hierarchy (describing systems' construction)(More)
IT organizations that wish to implement the best practices recommended by the IT Infrastructure Library (ITIL) need to specify the level of service provided to their customers. The implemented service needs to comply with this specification. We propose a method for describing declarative specifications of services, and of their planned constructions. These(More)
Large enterprises need to coordinate the IT initiatives that exist in different organisational units of the enterprise. If these initiatives are not coordinated, the resulting IT system is likely to become difficult to use and expensive to develop/maintain. Enterprise architecture methods are designed for that purpose. We report on the use of a(More)