BITS 2011 Abstracts

Full Papers Short Papers
Full Papers
Paper Nr: 3
Title:

OVERCOMING EX ANTE COST INTRANSPARENCY OF CLOUDS - Using System Analogies and a Corresponding Cost Estimation Model
Authors:

Nane Kratzke
Abstract: Although cloud computing is in all mouth today it seems that there exist only little evidences in literature that it is more economical effective than classical data center approaches. Due to a performed qualitative analysis on COBIT, TOGAF and ITIL this paper postulates that cloud-based approaches are likely to provide more benefits than disprofits to IT management. Nevertheless one astonishing issue is the not often stressed ex ante cost intransparency of cloud based approaches which is a major implicit problem for IT investment decisions. This paper shows first considerations how to overcome this issue by providing considerations for a cost estimation model and corresponding architectural, usage and consumption (cost) indicators.
Short Papers
Paper Nr: 2
Title:

BUSINESS PROCESS AND BUSINESS RULES MODELLING IN CONCERT FOR E-SERVICE DESIGN AND BUSINESS ALIGNMENT
Authors:

Nicklas Holmberg and Odd Steen
Abstract: Business Rules (BR) and Business Processes (BP) are essential pillars in any Business Information System (BIS) and hence important areas of BIS design (BISD). Historically, BRs have been overlooked as a part of BISD. BR approach (BRA) focus on concepts and methods to remedy this situation. BRs in this perspective are stateless and concerned with the “what” of a business and hence are associated with the operational decision logic. A concurrent approach is BP management and modelling (BPM), focusing on workflows and thus the “how” of a business. BPs are associated with the operational process logic. Ideally, BRs and BPs should be kept as separate services. However, BRs and BPs are interrelated and should be designed in parallel. In this paper, we argue for why and how this is important with an example from a development and research project called VacSam. The parallel design of BRs and BPs of the VacSam digital service revealed that stateful events and activities captured in BP modelling had profound influence on stateless conditions in the BRs. Without BP modelling this would not have been revealed and the Business Rules Centric Digital Service VacSam would not provide the desired result.