According to TOGAF, which of the following best describes the classification of architectural change in the case where multiple server systems are being consolidated to a single system?
A.
A bottom-up change to enhance operational capability
B.
An incremental change handled via change management techniques
C.
A re-architecting change that puts the whole architecture through an ADM cycle
D.
A revision change of the enterprise architecture
E.
A simplification change handled via change management techniques
Simplification change: a simplification change can normally be handled via change management techniques
Incremental change: an incremental change may be capable of being handled via change management techniques, or it may require partial re-architecting, depending on the nature of the change (see 15.5.3 Guidelines for Maintenance versus Architecture Redesign for guidelines)
Re-architecting change: a re-architecting change requires putting the whole architecture through the architecture development cycle again
The Change Management Process
Simplification change: A simplification change can normally be handled via change management techniques.
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Guidelines for Maintenance versus Architecture Redesign
For example:
If the change is at an infrastructure level - for example, ten systems reduced or changed to one system - this may not change the architecture above the physical layer, but it will change the Baseline Description of the Technology Architecture. This would be a simplification change handled via change management techniques.
https://pubs.opengroup.org/architecture/togaf8-doc/arch/chap14.html
15.5.2 - Enterprise Architecture Change Management Process
Another way of looking at these three choices is to say that a simplification change to an
architecture is often driven by a requirement to reduce investment; an incremental change is
driven by a requirement to derive additional value from existing investment; and a re-
architecting change is driven by a requirement to increase investment in order to create new
value for exploitation.
Correct Answer
simplification change - to an architecture is often driven by a requirement to reduce investment
incremental change - It is driven by a requirement to derive additional value from existing investment
re-architecting change - It is driven by a requirement to increase investment in order to create new value for exploitation.
If the change is at an infrastructure level — for example, ten systems reduced or changed
to one system — this may not change the architecture above the physical layer, but it will
change the Baseline Description of the Technology Architecture; this would be a
simplification change handled via change management techniques - Answer is "E"
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