ENTERPRISE ARCHITECTURE FOR CIO DECISION MAKING PONTUS JOHNSON

ENTERPRISE ARCHITECTURE FOR CIO DECISION MAKING PONTUS JOHNSON, PH. D. MATHIAS EKSTEDT ROYAL INSTITUTE OF TECHNOLOGY SWEDEN 1 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

ENTERPRISE ARCHITECTURE A MODEL-BASED DISCIPLINE 2 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

ENTERPRISE ARCHITECTURE MODELS AS DECISION SUPPORT ? ! Decision Maker 3 Questions and Answers INDUSTRIAL INFORMATION AND CONTROL SYSTEMS Models PONTUS JOHNSON

MAIN QUESTION: WHAT SHOULD BE MODELED? § Modeling is expensive § Maximize utility of minimal model § Make explicit the critical questions and how to answer them (theory) before defining the models (views), not the other way around 4 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

THE REAL WORLD FOR A GENERAL 5 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

THE REAL WORLD FOR A CIO 6 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

QUESTIONS FOR THE GENERAL 1. 2. 3. 4. 7 Where is the best place for our defense? Where is the best place to hide our troops? What is the best way to attack the enemy? … INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

QUESTIONS FOR THE CIO 1. What is the best way to secure our information? 2. Where is the best place to allocate new functionality? 3. What is the best way to improve the flexibility of the enterprise system? 4. … 8 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

THEORY FOR THE GENERAL ACCORDING TO CARL VON CLAUSEWITZ 1. Where is the best place for our defense? a) Place the defense at any narrow path. b) Use an impassable obstacle to support our flank. 2. Where is the best place to hide our troops? a) Hide behind a mountain, inside a forest, in villages, small thickets, or rolling terrain. b) Keep troops in columns. 3. What is the best way to attack the enemy? a) Attack enemy wing from the rear. b) Attack enemy wing from the front and from the flank. 4. … 9 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

THEORY FOR THE CIO ACCORDING TO LIU ET AL. 1. What is the best way to secure our information? a) b) c) d) e) f) 10 Maintain a high-quality security policy Uphold high security awareness Enforce strict access control Implement intrusion detection systems Deploy firewalls … INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

A MAP FOR A GENERAL 11 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

A MAP FOR A GENERAL 12 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

A SECURITY VIEW FOR A CIO (a) 13 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

A SECURITY VIEW FOR A CIO (b) 14 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

DECISION SUPPORT FOR A GENERAL 15 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

DECISION SUPPORT FOR A CIO 16 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

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SUMMARY By making explict how EA models answer the important questions we can ensure their usefulness as decision support. For this we need to: 1. Identify the most relevant questions 2. Determine how to answer them (theory) 3. Create models/views in accordance with theory 18 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

Enterprise IT Security According to Liu et al. 19 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

Enterprise IT Security According to Liu et al. 20 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

Enterprise IT Security According to Liu et al. 21 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON

Advantages of using Theory Diagrams § You know what to model § Theories can be examined § Competing theories can be compared § Theories can be reused 22 INDUSTRIAL INFORMATION AND CONTROL SYSTEMS PONTUS JOHNSON