9 THREE-TIERED BUSINESS FORMATION
220 Ch. 11 Service-Oriented Business Integration Modeling
D3
D1
D2
T1
T2
T3
EXHIBIT 11.10 THREE-TIERED BUSINESS FORMATION FORMAL
PRESENTATION
retirement, and benefits. Note that the domain cluster is contained in the T1 tier denoted by the
???contained??? symbol.
COMBINING DOMAINS, LAYERS, AND TIERS. A more complex business integration environment
may consist of various business elements and structures. These are combinations of layered
formations, independent business domains, and various tiers. The possible business structure permutations
that an organization may support are unlimited. A business analysis effort can reveal a
D3
D1 D2
T1
T2
EXHIBIT 11.11 TWO-TIERED BUSINESS INTEGRATION STRUCTURE
Modeling Process 221
D1
T1
D4
D2
D3
Employee
Training
Business
Domain
Employee
Benefits
Programs
Business
Domain
Employee
Retirement
Programs
Business
Domain
Payroll
Business
Domain
EXHIBIT 11.12 DOMAIN CLUSTER DISTRIBUTED STRUCTURE
complex business landscape that must be charted and detailed to mitigate service integration challenges.
Exhibit 11.13 depicts a two-tiered business integration environment. Tier T1 encompasses
autonomous domains D1 and D2, whereas T2 contains a three-domain layered structure (D3.L1,
D4.L2, and D5.L3). A more formal service-oriented business integration diagram is depicted in
Exhibit 11.14; it utilizes the ???contained??? symbol to communicate this domain??™s aggregation into T1
and T2.
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