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Strategic Aspects 51

The coupling of MDM, BRMS and BPM follows a protocol
that cannot be altered, without risking failure. It is first
necessary to ensure semantic modeling of the data, and then
handle the business rules to at last renovate the processes.
This is not about creating a tunnel effect that forces a
company to wait for final completion of data modeling work
before beginning the rollout of rules and processes. We will
see, in the section of this book dedicated to the method, that
it is possible to model data iteratively, by subsets, which also
permits the progressive establishment of rules and
processes.

This novel approach to the IT system, based on the three
repositories, gives birth to the concept of a Sustainable IT
Architecture. This concept goes against the legacy IT system,
too often trapped in opaque IT incapable of incorporating the
repositories. We will now elaborate on how this Sustainable
IT Architecture is truly of strategic value to the company.

2.3. Sustainable IT Architecture

The term “Sustainable IT Architecture” was used for the
first time in 2009 in Sustainable IT Architecture –a
progressive overhaul of the IS with SOA [BON 09], which
deals with the progressive transformation of an IT system,
from a technical point of view, basing itself on MDM, BRMS
and Service Oriented Architecture (SOA).

Figure 2.4. Agility Chain Management System (ACMS)