8 SERVICE-ORIENTED LIFE CYCLE SEASONS
on service life cycle events??”occur during the run-time season, in which services are road-tested
and are challenged by their environments, their peer services, and their consumers, and provide
business value. Exhibit 2.9 exemplifies the service life cycle season sizing mechanism, which
calls for the design-time season to last three months. Conversely, the run-time season is planned
to carry on production operations during a five-year period.
Service Life Cycle Timeline
Start End
1 2 3 4 5
Service Life Cycle Seasons
Design-Time Season
Five Years Three Months
2 1 3
Run-Time Season
EXHIBIT 2.9 SIZING SERVICE LIFE CYCLE SEASONS
42 Ch. 2 Service-Oriented Life Cycle Model
Finally, can services simultaneously live in these two life cycle seasons? Meaning, can
they be revamped, redesigned, and rebuilt while still operating and surviving in production? This
scenario is heartily recommended, because services must continue to provide business continuity
and stability while undergoing enhancements in the design-time season.
SERVICE-ORIENTED LIFE CYCLE DISCIPLINES
Service-oriented life cycle disciplines are best practices and standards that facilitate service design,
architecture, construction, operations in production, and management initiatives throughout the
service-oriented life cycle timeframe. They are typically devised by the SOA CoE body??”an
organization chartered to develop, recommend, and enforce SOA standards and policies across
the enterprise.
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