The depicted auto insurance
and life insurance lines of business both use an organizational enterprise service bus (ESB) that
provides support to auto and life insurance applications. The commonly utilized ESB also may
be employed for sharing customer account information and addresses across the two lines of
business. Note the owner of icon that denotes this ownership.
Enterprise Service Bus (ESB)
(packaged technological
asset)
Life Insurance
Line-of-Business
Business Domain
Auto Insurance
Line-of-
Business
Business
Domain
EXHIBIT 15.22 BUSINESS DOMAIN OWNERSHIP MODEL
Modeling Conceptual Architecture 333
ESTABLISHING A TECHNOLOGY STACK. A conceptual architectural model diagram should also
illustrate the hierarchical correlation between technological packaged solutions. The lower layers
of a technology stack characterize the supporting technologies and backbone deployment
assets, such as infrastructure, operating systems, and empowering platforms. Conversely, higher
stack levels constitute more granular implementations of the technological environment, such as
applications, services, and monitoring tools.
Why is a technology stack an important contributor to the architectural concepts that are
to be established? Remember, the technological landscape must contain the major building blocks
that empower business execution. This hierarchical formation can reflect the dependencies of the
various technological assets and even elaborate on their vital interaction and collaboration.
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