COMDTINST 5230.68
4. C4&IT ENTERPRISE ARCHITECTURE.
a. Enterprise Architecture Defined. The EA is a strategic, information asset base that defines the
mission, the information and technologies necessary to perform the mission, and the transitional
processes for implementing new technologies in response to the changing needs of the mission.
An EA includes an As-Is EA, a Target EA, and a transition plan, as depicted in Figure 1:
Definition of an Enterprise Architecture.
Defines where/what
USCG is today...
As-Is
Transition
Target
... .and where/how
USCG plans to
be in the future.
Transition Plan
As-Is EA
Target EA
Describes the current
Mission and business
Describes a planning state
state of the environment
of the environment
improvement efforts
Presents the "as-is" picture
Presents a "to-be" picture
Technology migration
Several targets developed
strategies
to phase planning horizons
Project development
over several periods
(i.e., +5 years, +10 years)
Deployment Plans
Figure 1: Definition of an Enterprise Architecture
(1)
As-Is Enterprise Architecture. The set of products that portray the existing enterprise, the
current business practices, and technical infrastructure.
(2)
Enterprise Transition Plan. A planning document that establishes the migration strategy to
get from the As-Is EA to the Target EA. The plan is created by identifying the gaps
between the As-Is and Target, and then plotting the process, system changes, and additions
required to bridge the gaps.
Target Enterprise Architecture. The set of products that portray the future or end-state
(3)
enterprise, generally captured in the organization's strategic thinking and plans. The
Target architecture consists of the To-Be EA (0 to 4 years into the future) and the May-Be
EA (5 to 10 years).
b. Fundamental Concepts.
(1)
An EA provides a mechanism for understanding and managing complexity and change. It
is a strategic resource that helps the Coast Guard plan and implement C4&IT solutions, and
the resulting investment portfolio, in order to meet mission and business needs. An EA
helps clarify the information necessary to perform the mission, the technologies necessary
to fulfill the mission, and the transitional processes for implementing new technologies in
response to the changing needs of the mission.
(2)
The Office of Management and Budget (OMB) has provided a set of Federal Enterprise
Architecture (FEA) reference models, as well as a Data and Information Reference Model,
to which all Federal agencies will relate their architectures. All investments and projects
Performance Reference Model (PRM), Service Component Reference Model (SRM), and
Technical Reference Model (TRM).
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