They form two distinct
design composition styles: circular (services 13 to 16), hierarchical (services 14 to 18).
Consumer C uses atomic Service 16 offerings.
??? Services 12 and 13 are supported by a network design composition beam, and thus
they form a network composition style that bridges between the two clusters: the SUV
7
1
4 12
11
10
3
2 8
A
6
9
13
14
15
16
C
17 18
B
D
EXHIBIT 13.19 DESIGN COMPOSITION DIAGRAM
280 Ch. 13 Service-Oriented Logical Design Composition
parts service cluster (Services 13 to 18) and the pickup truck parts service cluster
(Services 6 to 12). Therefore, Services 12 and 13 simultaneously belong to two design
composition styles??”star and network and circular and network.
??? Service 14 plays a dual role. It belongs to a circular design style and also to a hierarchical
design style.
??? Services 14 and 11 are linked by the network design composition style, which denotes
an implied and a unidirectional relationship.
LOGICAL DESIGN GRANULARITY ALIGNMENT STRATEGY. Service granularity assessment is a
vital task throughout all service life cycle stages. To tackle the granularity issue is to address one
of the most fundamental influences on reusability, service consumption, and asset consolidation.
Employ a granularity map (discussed in Chapter 7) that can uncover how valuable services are
to the enterprise. Remember, the top level of the organization granularity matrix accommodates
services that characteristically contain more business or technological processes.
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