This repetitive process is called the service life cycle. Exhibit P.1 illustrates
a service life cycle, in which the run-time and design-time sections, respectively, represent
service development and production processes.
When do services die? Services perish when they no longer provide viable solutions
to the problems of business or technology organizations. Service-oriented software entities that
become irrelevant to the enterprise??”because of business or technology trends and alterations to
business models and strategies??”should be demoted and eventually discontinued. The demise of
enterprise services indicates the termination of their life cycle. Therefore, they should be removed
from production environments and replaced with more appropriate solutions.
Modeling disciplines are the major contributors to the service life cycle paradigm, in
which a service undergoes major transformation during its lifetime. Nonmodeling disciplines that
30 Part One Service-Oriented Life Cycle
Service Life Cycle
Design Time
Run Time
EXHIBIT P.1 SERVICE LIFE CYCLE
immensely influence service behavior are also discussed here. These are typically management,
service construction, and production-time best practices that shape service strategies, implementation,
deployment, monitoring, and maintenance. Nonmodeling discipline activities not only
affect the course of service progression but also facilitate the proper practice of service-oriented
modeling disciplines.
Pages:
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80