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Consistent enterprise software system architecture for the CIO: a utility-cost based approach
KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.ORCID-id: 0000-0003-3922-9606
KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.ORCID-id: 0000-0002-3293-1681
KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
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2004 (Engelska)Ingår i: Proceedings of the 37th Annual Hawaii International Conference on System Sciences, 2004, 2004Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Previously, business operations of most large companies were supported by a number of isolated software systems performing diverse specific tasks, from real-time process control to administrative functions. In order to better achieve business goals, these systems have in recent years been extended, and more importantly, integrated into a company-wide system in its own right, the enterprise software system. Due to its history, this system is composed of a considerable number of heterogeneous and poorly understood components interacting by means of equally diverse and confusing connectors. To enable informed decision-making, the Chief Information Officer (CIO), responsible for the overall evolution of the company's enterprise software system, requires management tools. This paper proposes enterprise software system architecture (ESSA) as a foundation for an approach for managing the company's software system portfolio. In order to manage the overwhelming information amounts associated with the enterprise software system, this approach is based on two concepts. Firstly, the approach explicitly relates the utility of knowledge to the cost of its acquisition. The utility of knowledge is derived from the increased value of better-informed decision-making. The cost of knowledge acquisition is primarily related to the resources spent on information searching. Secondly, the approach focuses on ensuring the consistency of the architectural model.

Ort, förlag, år, upplaga, sidor
2004.
Serie
Proceedings of the Hawaii International Conference on System Sciences, ISSN 1060-3425
Nyckelord [en]
Companies, Computer architecture, Connectors, Costs, Decision making, History, Portfolios, Process control, Real time systems, Software systems
Nationell ämneskategori
Data- och informationsvetenskap
Identifikatorer
URN: urn:nbn:se:kth:diva-5350DOI: 10.1109/HICSS.2004.1265519Scopus ID: 2-s2.0-12344280935ISBN: 0-7695-2056-1 (tryckt)OAI: oai:DiVA.org:kth-5350DiVA, id: diva2:9423
Konferens
Hawaii International Conference on System Sciences; Big Island, HI, USA, 5-8 January 2004
Anmärkning

QC 20141211

Tillgänglig från: 2004-10-28 Skapad: 2004-10-28 Senast uppdaterad: 2018-01-10Bibliografiskt granskad
Ingår i avhandling
1. Enterprise architecture for IT management: a CIO decision making perspective on the electrical power industry
Öppna denna publikation i ny flik eller fönster >>Enterprise architecture for IT management: a CIO decision making perspective on the electrical power industry
2004 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Within the electric power industry, the average company's enterprise system - i.e. the overall system of IT related entities - is today highly complex. Technically, large organizations posses hundreds or thousands of extensively interconnected and heterogeneous single IT systems performing tasks that varies from enterprise resource planning to real-time control and monitoring of industrial processes. Moreover are these systems storing a wide variety of sometimes redundant data, and typically they are deployed on several different platforms. IT does, however, not execute in splendid isolation. Organizationally, the enterprise system embraces business processes and business units using as well as maintaining and acquiring the IT systems. The interplay between the organization and the IT systems are further determined by for instance business goals, ownership and governance structures, strategies, individual system users, documentation, and cost.

Lately, Enterprise Architecture (EA) has evolved with the mission to take a holistic approach to managing the above depicted enterprise system. The discipline's presumption is that architectural models are the key to succeed in understanding and administrating enterprise systems. Compared to many other engineering disciplines, EA is quite immature in many respects. This thesis identifies and elaborates on some important aspects that to date have been overlooked to a large extent. Firstly, the lack of explicit purpose for architectural models is identified. The thesis argues that the concerns of a company's Chief Information Officer (CIO) should guide the rationale behind the development of EA models. In particular, distribution of IT related information and knowledge throughout the organization is emphasized as an important concern uncared for. Secondly, the lack of architectural theory is recognized. The thesis provides examples of how theory, or analysis procedures, could be incorporated into the Enterprise Architecture approach and hereby concretely drive the development of the architectural models. Due to the nature of enterprise systems, EA theories inevitable will be of an indicative character. Finally, in relation to the models as such, three aspects are highlighted. Firstly, the cost of collecting information from the organization to populate models is routinely neglected by the EA community. This expense should be evaluated in relation to the utility of analyses that the information can provide in terms of better informed decision making by the CIO. Secondly, models (and meta-models) must be kept consistent. And thirdly, the design of models is restricted by the limited mental capabilities of the minds of the model users. CIO concerns must consequently be easy to extract from the Enterprise Architecture models.

Key words: Enterprise Architecture, Enterprise System, Chief Information Officer (CIO), Information Technology (IT) Management, Architectural Theory, Electric Power Industry

Ort, förlag, år, upplaga, sidor
Stockholm: Elektrotekniska system, 2004
Serie
TRITA-ICS, ISSN 1104-3504 ; 0402
Nyckelord
Electronics, Enterprise architecture, Enterprise system, Chief information officer, Information technology management, Architectural theory, Electric power industry, Elektronik
Nationell ämneskategori
Annan elektroteknik och elektronik
Identifikatorer
urn:nbn:se:kth:diva-36 (URN)
Disputation
2004-10-28, Kollegiesalen, KTH, Valhallvägen 79, Stockholm, 10:00
Opponent
Handledare
Tillgänglig från: 2004-10-28 Skapad: 2004-10-28 Senast uppdaterad: 2014-07-17Bibliografiskt granskad

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Ekstedt, MathiasJohnson, Pontus

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Ekstedt, MathiasJohnson, PontusLindström, ÅsaGammelgård, MagnusJohansson, ErikPlazaola, LeonelSilva, EnriqueLiliesköld, Joakim
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