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Showing posts from January, 2008

Frank Lloyd Wright

Frank Lloyd Wright, one of the most famous American [building] architects of all time, worked on over 500 structures and left a few notes of wisdom for us to consider. While the comparison between software and building architecture breaks down pretty quickly, the quotes below apply to both disciplines.

A great architect is not made by way of a brain nearly so much as he is made by way of a cultivated, enriched heart.All fine architectural values are human vales, else not valuable.An architect's most useful tools are an eraser at the drafting board, and a wrecking bar at the site.Every great architect is - necessarily - a great poet. He must be a great original interpreter of his time, his day, his age.Form follows function - that has been misunderstood. Form and function should be one, joined in a spiritual union.Get the habit of analysis - analysis will in time enable synthesis to become your habit of mind.Less is only more where more is no good.The architect must be a prophet... …

Static, Runtime, Physical

For the spring 2008 semester I function as a distance education instructor for the Principles of Software Architectures course offered by the School of Computer Science at the Carnegie Mellon University through the Institute for Software Research International. As I reviewed the course I fondly remembered the lectures by Prof. David Garlan and Tony Lattanze while pursuing my Masters in Software Engineering (IT) degree some years ago. At the same time I reflected on the architecture representation practices employed on some of the recent projects I’ve reviewed and sadly the state of affairs is looking pretty grim. It is still common to see software architecture designs mix incongruent design elements together, such as combining message flow process with a class diagram. As a gentle reminder, architecture of a software system is represented through a number of views that describe some angle of a system. There are many different views that can be chosen by an architect to represent some …

Evolving Opportunistic Solutions

Opportunistic projects (software solutions) are the essence of the progress in all organizations. These projects provide valuable ad-hoc gains in productivity to the people who need help the most. Such projects usually don’t have a formal budget, have one or a few people running it, and usually reside outside of enterprise architecture environment or go against the formal way of doing things. But these projects exist because they provide the benefit the core IT organization cannot. One example may be auto generation of pre-canned reports for a loan processing clerk. In this case an existing FICO score provides good information about the risk level of a potential borrower, but a loan procession clerk may get an additional level of insight, and reduce risk to the bank, by looking into additional publically available information. Usually opportunistic solutions target a small specialized niche, such as pre-canned reports for farm machinery loans. But as loan officers across bank division…

Edward Hopper - Communicating the Essence

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It’s the architect’s job to decide and communicate which quality attributes need to be emphasized in order to achieve the overarching mission of a solution. Similarly the iconic American artist Edward Hopper, in his paintings, captured the essence of a scene while abstracting the negligent elements of the situation. In painting Haskell’s House you clearly see that the artist chose to omit the wires from the electrical poles. The busy harbor behind the house is not depicted in the painting: the core emphasis is on the house. Also notice how the sun rays draw your attention on the house and you can almost forget about the mundane details of trees, landscaping, and electrical poles. A software architect has a similar job: capture the big picture (e.g. security, environment constraints, composition of services), but note the critical solution qualities (e.g. usability, performance). In the infamous painting, Nighthawks, Edward Hopper uses light and shadows to concentrate viewer’s attentio…

Enterprise Standards

What kind of hardware & software environment exists at company Foo and how do they handle similar challenges? How will organization Foo evolve over time? Few organizations publish their enterprise architecture specifications; after all, a refined purposeful architecture is a competitive asset. But some organizations publish such information. If you search for MS Word or PDF documents for keywords such as “Enterprise Architecture principles”, “enterprise standards”, “to-be EA”, you will find a few valuable resources. One example is an IT Standards document for the US state of Kentucky. The freshness of the resources will vary, but discovering and learning from other organizations is a good way to gain new perspective and judge your organization’s software and enterprise architecture approaches.Constantin K.
Firebrand Architect™
www.SoftwareArchitectures.com