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E NTERPRISE A RCHITECTURE FOR CIO D ECISION M AKING. P ONTUS J OHNSON, P H. D . M ATHIAS E KSTEDT. ROYAL INSTITUTE OF TECHNOLOGY SWEDEN. E NTERPRISE A RCHITECTURE A M ODEL- B ASED D ISCIPLINE. ?. !. E NTERPRISE A RCHITECTURE M ODELS AS D ECISION S UPPORT. Questions and

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E nterprise a rchitecture for cio d ecision m aking

ENTERPRISE ARCHITECTURE FOR CIODECISION MAKING

PONTUS JOHNSON, PH.D.

MATHIAS EKSTEDT

ROYAL INSTITUTE OF TECHNOLOGY

SWEDEN


E nterprise a rchitecture a m odel b ased d iscipline
ENTERPRISE ARCHITECTUREA MODEL-BASED DISCIPLINE


E nterprise a rchitecture m odels as d ecision s upport

?

!

ENTERPRISE ARCHITECTUREMODELS AS DECISION SUPPORT

Questions

and

Answers

Decision Maker

Models


M ain q uestion w hat s hould be m odeled
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


T he r eal w orld for a g eneral
THE REAL WORLD FOR A GENERAL


T he r eal w orld for a cio
THE REAL WORLD FOR A CIO


Q uestions for the g eneral
QUESTIONS FOR THE GENERAL

  • 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?


Q uestions for the cio
QUESTIONS FOR THE CIO

  • What is the best way to secure our information?

  • Where is the best place to allocate new functionality?

  • What is the best way to improve the flexibility of the enterprise system?


T heory for the g eneral a ccording to c arl von c lausewitz
THEORY FOR THE GENERALACCORDING TO CARL VON CLAUSEWITZ

  • Where is the best place for our defense?

    • Place the defense at any narrow path.

    • Use an impassable obstacle to support our flank.

  • Where is the best place to hide our troops?

    • Hide behind a mountain, inside a forest, in villages, small thickets, or rolling terrain.

    • Keep troops in columns.

  • What is the best way to attack the enemy?

    • Attack enemy wing from the rear.

    • Attack enemy wing from the front and from the flank.


T heory for the cio a ccording to l iu et al
THEORY FOR THE CIOACCORDING TO LIU ET AL.

  • What is the best way to secure our information?

    • Maintain a high-quality security policy

    • Uphold high security awareness

    • Enforce strict access control

    • Implement intrusion detection systems

    • Deploy firewalls


A m ap for a g eneral
A MAP FOR A GENERAL


A m ap for a g eneral1
A MAP FOR A GENERAL


A SECURITY VIEW FOR A CIO (a)


A s ecurity v iew for a cio b
A SECURITY VIEW FOR A CIO (b)


D ecision s upport for a g eneral
DECISION SUPPORT FOR A GENERAL


D ecision s upport for a cio
DECISION SUPPORT FOR A CIO


S ummary
SUMMARY

By making explict how EA models answer the important questions we can ensure their usefulness as decision support. For this we need to:

  • Identify the most relevant questions

  • Determine how to answer them (theory)

  • Create models/views in accordance with theory





Advantages of using theory diagrams
Advantages of using Theory Diagrams

  • You know what to model

  • Theories can be examined

  • Competing theories can be compared

  • Theories can be reused


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