They can be
composed of autonomous and disparate domains that maintain loose business associations and
are gathered together because of geographic location or management reasons.
The process that enables such business domain containment is made possible by using the
???contained??? integration operation symbol, as depicted in Exhibit 11.9. Here the three domains??”
D1, D2, and D3??”are associated with three business tiers??”T1, T2, and T3. This simple template
conveys a one-to-one relationship between the business domains and their corresponding tiers.
A more formal presentation of this scenario is depicted in a service-oriented business diagram,
shown in Exhibit 11.10. The ???contained??? symbol is used to denote the associations between the
domains and their corresponding tiers.
Exhibit 11.11 depicts a two-tiered business integration structure in which three business
domains are contained. Tier T1 is composed of two domains, D1 and D2, and tier T2 is composed
of domain D3. Note that all participating domains??”D1, D2, and D3??”are not layered. They are
autonomous domains that are bounded by their corresponding tiers because of business affiliation
and logical grouping considerations devised during the business integration modeling process.
Finally, Exhibit 11.12 illustrates yet another example of a domain tiered formation. This
presentation, however, depicts a business cluster that is composed of four affiliated domains
that provide employee benefits and compensation services in an organization: payroll, training,
D1
D2
D3
Tier 1
Tier 2
Tier 3
EXHIBIT 11.
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