Adopt the traditional architecture drawing approachCoherent EA approach adopt the traditional architecture/engineering drawing approach to develope, communicate, certify and deliver EA artifacts. The CEA architecture has developed the following Enterprise Architecture drawing sets :
Why EA architecture drawing
. EA is known to be stealth due to lack of practical communication mechanism.
. Significant EA work become hidden treasure in the repository.
. Communicate Enterprise Architecture design with architecture drawings instead of volumes of document.
. Architecture drawing has been the proven architecture communication mechanism.
Architecture drawings serve as a communication package
The architecture drawings serves as the EA communication package to contain defined EA artificats.
The Utilization of EA architectrure drawings :
. To know the enterprise via architecture drawings.
. Develope EA via architecrure drawing.
. Communicate EA via architecture drawings.
. Certify EA via architecture drawings.
. Deliver EA via architecrure drawing.
Drawing oriented EA approach
The CEA method adopt the traditional architecture by developing EA from the drawing board in the follow approach:
. Step 1: To see the big picture and know the enterprise via EA Map which analogy to geographical survey. I have developed this method from the swim-lane model for more than ten years. This is version 3, please review the method in the EA Map blog.
. Step 2: To analyze the Enterprise Business Architecture with business architecture drawing room the aspect of Mission (Why), Function (How), Information (What), Organization (Who), Location (Where) and Performance requirement (When). The drawings are backed up with much architecture analysis.
. Step 3. To analyze the application architecture with the application architecture drawing which align application system to support business.
. Step 4. To analyze the data architecture with the data architecture drawings which align data resources to support business.
. Step 5. Establish Enterprise technology architecture baseline with the technology architecture baseline drawings, which illustrate the enterprise technology baseline environment.
3.0 ADOPT THE ARCHITECTURE DRAWINGS APPROACH
Civil engineers and architects use blueprints to communicate with stakeholders rather than write many volumes of books to describe a city or a building. John Zachman suggests that EA artifacts must be graphically presented . He writes that :
“I would further suggest that ultimately, the Enterprise will require that these artifacts must necessarily be graphically presented because at the point in time when you will need the artifacts, you won’t have the time to read through a thousand pages of text to attempt to discern their implications “ 
EA communication must take human factor into account.
Architecture drawings are developed base on nature human limitation
Communication to people subject to the nature hunman limitation in comprehending information. It is very different to device and device communication where the communication technology evolved rapidly. In the design of EA communication to stakeholders, It is important to understand human limitation in comprehending overwhelming information.
The information overload bibliography from Humboldt state university library
Richards, C.E. (1987). Roles: A Strategy to Avoid Information Overload. Central Issues in Anthropology, 7(1), 9-12.
"The research makes it clear that (a) the human brain is limited in its ability to process data, (b) the limitation is not susceptible to training, and (c) it is approximately the same for all humans."
Given the above, Richards states that human interaction would place an information overload on individuals without the templates provided by roles based on gender, age, kinship, and compartative power. As societies increase in population, the number of recognized roles decreases due to this inherent processing limitation.
Miller, G.A. (1956). The magical number seven, plus or minus two: some limits on our capacity for processing information. Psychological Review, 63, 81-97. (Full text of this article at The Magical Number Seven.)
Human beings have severe limitations on the amount of information they are able to receive, process, and remember. Their "span of immediate memory" or "channel capacity" is limited to approximately 7--plus or minus two-- items. Through recoding items so that information to be remembered is placed in larger "chunks," it is possible to expand this channel capacity somewhat.
The amount of information human able to recieve, process and comprehend is a constant volume as shown on following figure. The Enterprsie Target Architecture The Enterprise target architecture, at very high level, is more a plan rather than architecture design to fit in the human comprehensive limitation. The segment architecture have more depth than enterprise target architectrure but in narrow scope to fit in the human limitation. The solution architecture address specific problem with in depth solution.
Architecrture drawing serve as a container
The challenge of EA communication is due to lack of basic EA communication protocol which is the communication packages to deliver EA information similar to the package concept s in any communication model. EA professional communicate with stakeholder with volumes of documents and the deep information ocean of EA repository. The notion is that it all here and you figure it out. Or, communicate with stakeholder with power point presentations which may sound good but enveloped after the presentation. Or endless computer generated business process models which fail to connect with people and only serve as an expensive wall paper.
EA must feed the stakeholder in bitable size of EA information for digestion. Graphic presentation along without a container does not serve well for EA communication, the key for EA communication is the package of EA artifact. Traditional architects use architecture drawings as the basic container which focus on a subject and can be certified to deliver architecture artifacts to the stakeholders. Standardized architecture drawings have been an old trick which has work well to communicate architecture information to the stakeholder. It works for the industrial age and will also work for the information age. It is essential to have a container which can pass the EA information around both in paper and in electronic form. I have put my two cents in the EA drawing lab. To create business architecture drawing sets, Application architecture drawing sets, data architecture drawing set and technology architecture drawing sets leveraging on my previous life as a Professional Engineer. The drawing sets are far from a finish product but it conveys the ideal.
Traditional architects and engineers use architecture drawing go accomondate the human factor.
LEA adopts the traditional architecture approach to communicate architecture artifact with architecture drawing sets. Architecture drawings, although an old practice, serve as the container to convey defined architecture information to stakeholders. The challenge of EA communication is due to lack of proper containers to convey information to the stakeholders. The current EA communication via volumes of documents does not sever well to convey EA artifact in time of need.
The LEA approach adopts the architecture and engineering drawings approach to communicate with stakeholders. The author have created drawing set on business architecture, data architecture and technology architecture using the traditional engineering drawing technique acquired in his civil engineering discipline.
LEA recommend hand-drawn diagrams in addition to mechanically generate drawings. A hand-drawn sketch today can often be far more valuable then a fully documented and validated document several months from now . Hand-drawings capture the architecture thinking on the paper, the hand drawings actually facilitate the thinking process in group architecture design. Hand drawing carry the human touch which is essential to the communication between the architects and stakeholders in the design process. Mechanically generate drawings which document the architecture design can not replace the hand drawing , it serve the purpose to document the architecture after the fact of the designing process.
LEA suggest to use architecture drawings to illustrate the high level big picture rather than a blueprint for design and build as it is in the traditional engineering approach. EA in architecture drawing approach is not new, some EA approach take architecture drawings as a blueprint for design and build and created many drawings only good for use as wall paper. Architecture drawings is very effective on presenting the high level holistic big picture but do not serve well in describing business logic in detail. PEA architecture drawings are particularly useful to communication architecture concept with non-technical stakeholders. The high level architecture drawings , similar to the plan view in a house blueprint, illustrate enterprise architecture concept in explicit pictures to connect the non-technical stakeholder to the enterprise big picture as shown in the following example crated by the author. A hand-drawn sketch today can often be far more valuable then a fully documented and validated document several months from now . Machine produced architecture drawing is valuable to document the architecture artifact after it is designed. The machine produce drawings are complicate and difficult to comprehend with special technology background. The architecture drawings can be presented on both electronically and on traditional paper print hard copy. The electronic versions are easy to distribute to the stakeholders. However, the hard copies of architecture drawings serve better during the communication to the non-technical stakeholders during the discussion. PEA suggest high level architecture drawing sets to illustrate the business architecture, the application architecture, the technology architecture similar to the traditional architecture drawings. The author have created proto type enterprise architecture drawing sets and have been very useful to communicate enterprise architecture with stakeholder
Baseline Architecture Standards DrawingsEA standards are unique product of EA. A major difference between buidling architecture and enterprise architecture ist that the traditional architecture delivers archtiecture design for construction, Enterprise Archiecture relies on delivering architectuture standards to enable reuse.
Agility and Simplicity must be earned via compliance to architecture standards. However, the EA industry has not yet to develop an efficient vehicle to deliver architecture standards to stakeholders. Standards has been embedded in a long list of standard profile embedded in a large document or a repository. It is very difficult to comply with architecture standards without knowing what it is. The Light Enterprise Architecture (LEA) has developed the Baseline Architecture Standard Drawing concept to deliver architecture standards for stakeholders in different area. EA deliver architecture standards to enable agility and simplicity rather than design blueprint for construction.
For the purpose of architecture management, the baseline architecture standards drawings render the enterprise baseline to know the standard architecture environment. For the application developers, the baseline architecture standard drawing serve the architecture standards and building blocks to enable agile and simple application development.
The baseline architecture standards drawings leverage on architecture pattern to render a group of standards pertaining to the architecture pattern as shown in the following figure:
The baseline architecture standard drawings are establish with collaboration and consensus from stakeholders and subject matter experts to consist the for every domain such as :
Application Technology Architecture.
Data Technology Architecture.
Integration Technology Architecture.
Hardware Platform Architecture.
The data technology archtiecture drawing setThe data technology consist of :
data technology architecture drawings,
The GSS technology architectureThe gereral servece systems are common to every enterprsie. It consist of the architecture drawing set for Access, collaboration, network, platform and security base on different technology domain.
The Access technology architecture :
The Collaboration architecture
network architecture drawing sets
security architecture drawings sets,
platform architecture drawing sets.