The negative effects of the overall complexity of business and IT in the enterprise, manifest themselves as unreliability and excessive cost of operations, and excessive cost and time to make changes. Business complexity has additional
negative effects due to the difficulties in selling more complex
products and customer dissatisfaction due to unclear and time consuming
business processes. Therefore complexity of the business and IT in enterprise needs to be controlled and managed.
To be able to control and manage the complexity, we need to be able to measure it. If looking into different treatments of the complexity of systems, we can define the complexity as the number of different elements and their interconnectedness (number of interconnections between these elements).
Based on such definition, we propose to measure business and IT complexity by counting the elements of business (like business models, customer segments, offered products, business functions, business services, business processes, etc.) and IT (like data stores, applications, technologies, etc.), and their interconnections.
In both business and IT we can differentiate between:
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