Governance and Management of Information Technology - Enterprise Information Systems Design, Implementation and Management: Organizational Applications - page 49

Figure 2. Relationship of supply and demand of services between components

business coMponent
MAp for enterprises

demand, in which one component supplies a ser-
vice to another component and that one receives
a business event at the same time it can consume
a service, generating a business event for another
component.
This relationship establishes that what is sup-
plied by a component is consumed by the other
and vice versa. Figure 2 illustrates this relation-
ship, in which component A, arrow 2, provides a
service to component B in response to a business
event, arrow 1. The same applies to the component
that generates an event for component B, arrow
3, and receives a service supplied by component
B, arrow 4.
Considering an organization with multiple
components, in which each one can provide
services to all other components and from them
receives business events, it is interesting to adopt
a graphic representation that facilitates commu-
nicating the relationship between components.
In Figure 2 the arrow represents the range of
services supplied by the component and the bar
represents the means of communication used
so that all other components can consume the
services supplied.

A zebra approach could be used to understand
the decomposition of an organization. Initially,
the entire organization is considered a system
that is understood by its external interactions, as
if it were a “black box”. But when the external
interactions are dominated, one can observe what
happens within the system, and now the system
is a “white box”. The “white box” in turn can be
decomposed into other components. These new
components are seen as a “black box” until all
interactions are well defined. When this happens,
the ideas emerge and its contents can be observed
(Hopkins & Jenkins, 2008).
Through the zebra approach and considering
the CBM® aligned with the systemic character-
istics presented by IT, a hypothetical architecture
components map for aligning the organization with
IT was produced, considering the relationships
among its components. This map also has decom-
position levels applied to components, establishing
a hierarchical relationship. An analysis of the IT