Scenario: MegaMart
Case Study Title (Case Study):
MegaMart is a Retail Chain which has expanded throughout India and the Far East.
The CEO and CIO decide that there is a crying need to put an Enterprise Architecture in place to realize MegaMart’s strategy to expand its revenue and diversify. The CIO has evaluated and decided to go in for TOGAF9 and adapt it to his enterprise requirements.
The Preliminary and Vision Phase have been completed.
As such very few architectural artifacts exist and the target architecture as of now is not very clear. As the Lead Architect how would you guide your team of architects for the Business Architecture definition?
A. In the first iteration start with the definition of the Target Business Architecture using a Top down Approach.
Then keep on iterating in Phase B till the Target Business Architecture is refined before going to Phase C and Phase D. After Phase C and Phase D are over, iterate again to Phase B and define the baseline Business Architecture, analyze the gaps finalize the Architecture Definitions documents and proceed to Phase C and Phase D.
B. In the first iteration start with the definition of the Baseline Business Architecture using a Top Down approach. Define the Architecture Definition document after analyzing the impacts and reviewing with the stakeholders. Then proceed to Phase C and Phase D. In the next iteration finalize the Target Business Architecture and proceed to Phase C and Phase D.
C. In the first iteration start with the definition of the Baseline Business Architecture using a Bottom Up approach. Define the Architecture Definition document after analyzing the impacts and reviewing with the stakeholders’.
Proceed to Phase C and Phase D. In the next iteration finalize the Target Business Architecture, determine the gaps and the roadmap, and the impact and update the Architecture Definition document. after analyzing the impacts and reviewing with the stakeholders. Then proceed with the iteration.
D. In the first iteration start with the definition of the Target Business Architecture using a Top Down approach. Define the Architecture Definition document after analyzing the impacts and reviewing with the stakeholders proceed to Phase C and Phase D. In the next iteration finalize the Baseline Business Architecture, determine the gaps and the roadmap, and the impact and update the Architecture Definition document. After analyzing the impacts and reviewing with the stakeholders. Then proceed with the iteration.
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Two approaches can be adopted within the ADM for the development of architectures:
– Baseline First: In this style, an assessment of the baseline landscape is used to identify
problem areas and improvement opportunities. This process is most suitable when the
baseline is complex, not clearly understood, or agreed upon. This approach is common
where organizational units have had a high degree of autonomy.
– Target First: In this style, the target solution is elaborated in detail and then mapped back
to the baseline, in order to identify change activity. This process is suitable when a target
state is agreed at a high level and where the enterprise wishes to effectively transition to
the target model.
The normal approach to Target Architecture development is top-down. In the Baseline
Description, however, the analysis of the current state often has to be done bottom-up.