As has been concluded, service clustering is also
Logical Design Composition Strategies 273
an effective mechanism to identify common assets that share business or technology attributes.
A service design composition reusability strategy should employ service clustering practices to
assist in discovering service reusability opportunities.
A cluster must have a focal point??”a driving strategy that is dominated by an implementation
concept. This must be an idea that unifies its contained service members. Because a cluster
is composed of various services that collaboratively contribute to a solution, they also must have
a gravitational force??”that is, a leading purpose that makes a cluster unique. For example, a
cluster can group together services that take part in customer car insurance claims processing.
Another cluster can offer data aggregation services, by which information is collected from different
content providers. This service grouping and membership mechanism enables the discovery
of new services and common functionality. So how can cluster structures enhance organizational
reusability factors? How can a cluster reveal reusability opportunities?
A single cluster would not provide much help. To identify reusability sweet spots, however,
superimpose two or more clusters to create overlapping sections that can facilitate the discovery
of shared services. Thus intersecting clusters??”akin to Venn diagrams??”can uncover services that
can be commonly used by all intersecting service groups.
Pages:
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476