Category Archives: Thoughts on the World
I’ve just read an excellent paper by Pat Helland of Microsoft, in which he likens the development of cities and manufacturing in the 19th century to the development of systems and business models now. His conclusion – IT at the moment is about at the same stage as America in the 1880s, when they were just starting to turn the Wild West into an industrialised nation!
Three short quotes from Helland’s conclusions bear repeating directly. On heterogeneity he says:
Remember that heterogeneity happens. Unless you have a very simple application portfolio, shared services will not be achieved by trying to put all
of your applications on one version of one platform. Even if you could, the next
merger would change that! Rather, you have to design for interoperability and
integration across platforms. This is the force that is driving the industry
wide work in service-oriented architectures.
He extends the popular “city planning” metaphor to IT investment:
IT investment is a balance of funding the sacred, protecting historic monuments, and allocating spending between infrastructure and business opportunity. Striking this balance is a key facet in effective governance, and in realizing the potential of IT in your organization.
And finally, those who seek to maintain control of their enterprise
architecture through heavy governance would be well advised to note:
You have to maintain a light hand. It is counterproductive to try to dictate
what happens in every structure in town, what color shirts are made, and how much is charged for soap. You have to embrace the semi-autonomous approach to governance that is characteristic of our cities, and allow the process owners to optimize and achieve efficiencies with as few constraints as
possible.
See
http://msdn.microsoft.com/library/en-us/dnmaj/html/aj2metrop.asp
Does anybody know if Microsoft have killed off their Architecture Journal? I was just about to write a post linking to it, and I find the content has been moved to an archive area and all the links have changed. Continue reading →
Monday, July 11, 2005 in
Thoughts on the World
Arnon Rotem-Gal-Oz has set up an interesting new site / blog dedicated to software architecture. Of particular note, he’s trying to put some detail on the architecture “process” which is often negelcted as a single box on the development process Continue reading →
There seems to be quite a lot of activity on the “Domain Specific Language” front at the moment. Martin Fowler published “Language Workbenches: The Killer-App for Domain Specific Languages?”, in which he concludes that the common programming pattern of setting Continue reading →
In an interesting echo of my last piece (Why Software Isn’t Like Building Construction), Scott Ambler has analysed bureaucratic processes as a response to management fear about what can go wrong in software development. His conclusion is that these processes Continue reading →
Many software development and management methods are founded on a basic assumption – that constructing software is rather like building a bridge or a house. Once we’ve “done the design”, actually generating the software ought to be a completely predictable, Continue reading →
I recently attended a day of the Butler Group “Application Development Strategies” Symposium. I’ve just posted a short report on some of the more interesting discussions and presentations. Almost all of the presentations shared a reminder that we still have Continue reading →
I’ve just posted my review of this wonderfull book, by one of the world’s greatest leaders. The book is exciting, inspiring and, most of all, fun. I urge you to read it (and my review)! Continue reading →
Wednesday, May 18, 2005 in
Reviews,
Thoughts on the World
Microsoft have just published an excellent paper by Kim Cameron discussing the characteristics of an “identity metasystem” which must evolve if we are to have proper trust in the Internet and interactions which take place through it. The paper is Continue reading →
I’ve just read a wonderful paper by Guy L Steele, “Growing a Language“. He argues strongly that programming languages must be “small”, but able to grow. Such a language will have a relatively simple structure, syntactic rules, and a small Continue reading →
Integration, like other design activities, can benefit from sharing ideas and proven strategies in the form of patterns. An excellent starting point is Gregor Hohpe and Bobby Woolf’s Enterprise Integration Patterns website and book. In my recent work I’ve discovered Continue reading →
In Extensibility Points, Gregor Hohpe describes architecture as a guessing game, trying to understand future changes to a business, and designing a system to cater for those changes. He’s written a good article on types of extensibility and where they Continue reading →