http://h30507.www3.hp.com/t5/Transforming-IT-Blog/Enterprise-Architecture-by-Choice-Not-by-Chance-Nadhan-s-Top-5/ba-p/106271 <p><font size="2">By E.G.Nadhan, Distinguished Technologist, HP Enterprise Services</font></p><p> </p><p><font size="2">Not far from where <a target="_self" href="http://www3.opengroup.org/sanfrancisco2012">The Open Group Conference</a> is being held in San Francisco this week is the <a target="_self" href="http://en.wikipedia.org/wiki/Winchester_Mystery_House">Winchester Mystery House</a>, once the personal residence of Sarah Winchester, widow of the gun magnate William Wirt Winchester.  It took 38 years to build this house.  Extensions and modifications were primarily based on a localized <em>requirement du jour</em>.  Today, the house has several functional abnormalities that have no practical explanation.</font></p><p> </p><p><font size="2">To build a house right, you need a blueprint that details what is to be built, where, why and how based on the home owner's requirements (including cost).  As the story goes, Sarah Winchester's priorities were different.  However, if we don't follow this systematic approach as Enterprise Architects, we are likely to land up with some Winchester IT houses as well.</font></p><p> </p><p><font size="2">Or, have we already?  Enterprises are always tempted to address the immediate problem at hand with surprisingly short timelines.  Frequent implementations of sporadic, tactical additions evolve to a Winchester Architecture.  Right or wrong, Sarah Winchester did this by choice.  If enterprises of today land up with such architectures, it can only by chance and not by choice.</font></p><p> </p><p><font size="2">So, here are my tips to architect by choice rather than chance:</font></p><p> </p><p><font size="2"><strong>1. Establish your principles</strong>.  Fundamental architectural principles must be in place that serve as a rock solid foundation upon which architectures are based.  These principles are based on generic, common-sense tenets that are refined to apply specifically to your enterprise.</font></p><p> </p><p><font size="2"><strong>2. Install solid governance</strong>.  The appropriate level of architectural governance must be in place with the participation from the stakeholders concerned.  This governance must be exercised, keeping these architectural principles in context.</font></p><p> </p><p><font size="2"><strong>3.  Ensure business alignment</strong>.  After establishing the architectural vision, Enterprise Architecture must lead in with a clear definition of the over-arching business architecture which defines the manner in which the other architectural layers are realized.  Aligning business to IT is one of the primary responsibilities of an Enterprise Architect.</font></p><p> </p><p><font size="2"><strong>4. Plan for continuous evaluation</strong>.  Enterprise Architecture is never really done.  There are constant triggers (internal and external) for implementing improvements and extensions.  Consumer behavior, market trends and technological evolution can trigger aftershocks within the foundational concepts that the architecture is based upon.</font></p><p> </p><p><font size="2"><strong>5. Standardize</strong>.  All that said, Enterprises must be agile in order to react to such demands.  A standardized and modularized approach is key.  Standardization can be implemented in various shapes and forms.  It could be the Architectural Development Method [<a target="_self" href="http://www.opengroup.org/togaf/">TOGAF</a>] or the reference <a target="_self" href="http://www3.opengroup.org/news/press/open-group-publishes-new-standards-soa-and-cloud">architecture for a Service Oriented Approach</a> or the <a target="_self" href="http://bit.ly/wiVW29">manner in which infrastructure services are provisioned across SOA and Cloud solutions</a>.</font></p><p> </p><p><font size="2">Thus, it is interesting that The Open Group conference is miles away from the Winchester House.  By choice, I would expect Enterprise Architects to go to the Open Group Conference.  By chance, if you do happen by the Winchester House and are able to relate it to your Enterprise Architecture, please follow the tips above to architect by choice, and not by chance.</font></p><p> </p><p><font size="2">If you have instances where you have seen the Winchester pattern, do let me know by commenting here or following me on Twitter @NadhanAtHP.</font></p><p> </p><p><font size="2">Learn how <a target="_self" href="http://www8.hp.com/us/en/services/services-detail.html?compURI=tcm:245-922080">HP Strategic IT Advisory Services</a> can help your organization get more business value from its IT investment.</font></p> Mon, 30 Jan 2012 16:35:10 GMT TS_Guest 2012-01-30T16:35:10Z http://h30507.www3.hp.com/t5/Transforming-IT-Blog/Enterprise-Architecture-by-Choice-Not-by-Chance-Nadhan-s-Top-5/ba-p/106271 <p><font size="2">Is your enterprise architecture a coherent whole, or an unplanned sprawl?</font></p> Mon, 30 Jan 2012 16:35:10 GMT http://h30507.www3.hp.com/t5/Transforming-IT-Blog/Enterprise-Architecture-by-Choice-Not-by-Chance-Nadhan-s-Top-5/ba-p/106271 TS_Guest 2012-01-30T16:35:10Z