SOEA - Service Oriented Enterprise Architecture

Link to article
Auther(s):
Olaf Zimmermann, Pal Krogdahl and Clive Gee
Published:
2 Jun 2004
ABSTRACT:
Tries to define a structured approach or analysis and design method is required to craft SOAs of quality. As none of the existing approaches met the authors requirements on recent SOA projects, they suggest combining elements from well-established practices such as OOAD, EA, and BPM, complementing them with innovative elements upon demand.

• “While the SOA approach strongly reinforces well-established, general software architecture principles such as information hiding, modularization, and separation of concerns, it also adds additional themes such as service choreography, service repositories, and the service bus middleware pattern.”

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Link to article
Auther(s):
Ali Arsanjani
Published:
09 Nov 2004
ABSTRACT:
Discusses the highlights of service-oriented modeling and architecture; the key activities that you need for the analysis and design required to build a Service-Oriented Architecture (SOA).

• SOA is not a product - it’s about bridging the gap between business and IT trough a set of business-aligned IT services using a set set of design principles, patterns and techniches.

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Auther(s):
Robert L. Glass, V. Ramesh, Iris Vessey
ABSTRACT:
Comparing the topics and methods of the three major subdivisions of the computing realm.

Robert L. Glass et. al. has looked at how, and what, the fields of IT (computer science (CS), software engineering (SE), and information systems (IS)) focus their research;

• what are the topics of interest,
• how is the problem approached,
• which methods are used, what,
• what is their frame of reference and
• what is the level of abstraction.

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Title: Service Oriented Enterprise Architecture (SOEA)

Supporting the business has always been the purpose of IT. However, in an evermore competitive world the ability to change has become more important than ever. Service Oriented Architecture (SOA) has often been proclaimed to be the “silver bullet” that can make your IT flexible and support the desired agility of the business. The following quote illustrates how serious this problem is:

“A recent survey of Fortune 500 companies indicated that over 80% had altered their business model in a given two-year period. Two thirds of these - roughly half of the total respondents - claimed that this business change had been constrained by inflexible IT. In a survey by IBM Business Consulting Services, 90% of CEOs expect to transform their enterprise to become more responsive, particularly to customer demand, within the next five years.” [CBDI]

SOA is the natural evolution in software development, enabling a higher level of abstraction, which has made it easier to lift IT to a management level. This higher level of abstraction has lead to conflicting areas between Enterprise Architecture (EA) and SOA. A conflict that need to be approached with caution. But, if solving this conflict it is my claim that SOA and EA will form a synergy enabling the harvesting of the promised effects of both SOA and EA.

Before a conflict can be solved it must be known, and in order to resolve the conflict a common ground must be identified. The purpose of this thesis is to set the first step in this direction by:

• Describing the evolution of SOA as a concept.
• Identify, on a conceptual level, the aspects where SOA and EA operate on common levels of abstraction.
• Elaborate on the conceptual aspects, using operational aspects commonly used by both SOA and EA.
• Discuss the next step of SOA and EA.

Problem summary: Does SOA and EA have a spurious correlation , or is there something causal between the two?

Surprisingly easy!! Up and running in 5 minutes.. NICE!!

However the layout needs some work. Which hopefully will improve in time…

But the first task ahead will be to complete the preparations for my thesis. So until then the site will be left alone..