2.5 Maintaining the Enterprise Architecture

There is a common aphorism among project managers that “all projects are under budget and on schedule on the first day.” Without maintenance, enterprise architecture descriptions (model representations) are valid exactly once, if even that: at the time they were built. Architecture models are snapshots of reality.

The EA is, by definition, a set of models that collectively describe the enterprise and its future. Its value to business operations is more than just IT investment decision management. The EA is the primary tool to reduce the response time for impact assessment, trade-off analysis, strategic plan redirection, and tactical reaction. Consequently, the EA must remain current and reflect the ...

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