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Enterprise Services Architecture (ESA)

In organisations you have business service management, the latest IT trends of SOA and infrastructrure (service) outsourcing. The whole enterprise is heading towards services. This whole site is about Enterprise Services Architecture where we hope to finally see IT and Business alignment with line-of-sight from Business Service through to IT Services and Infrastructure Services.

Unfortunately, Enterprise Architecture is not described or used consistently across the IT industry let alone Enterprise Services Architecture. This wiki's aim is to provide a resource for Enterprise Architects and we don't want to get into long discussions on what term to use but provide tools and resources to aid getting the job done.

In its basic form an Enterprise Architecture must describe the organisation both as it is today and as it is envisioned in the future along with a roadmap to progress between. These descriptions or views must include both business and technical perspectives. Not only is it about the artefacts produced but the process of how they are produced. You could say Enterprise Architecture provides line of sight from the business through to information and down to technology implementation (and visa-versa).

Enterprise Services Architecture (ESA) is the creation of an Enterprise Architecture but looking at the provision of services at all levels.

ESA benefits can be summed up as gaining control over how the organisation realises benefit out of Information Systems. An organisation must be willing to invest in this activity, whilst the process being used is incremental always looking at feedback loops and improvements. An ESA must support an evolving business and so must itself evolve. There are many aspects to ESA, including architecture planning, governance, taxonomies and ontologies, all of which impact its success. Without the right guidance, tools, frameworks and methodologies ESA can quickly become unwieldy.

If you do a quick search on the web tou will see many Enterprise Architecture frameworks and processes but these don't provide supporting artefacts based on reality. This wiki hopes to give pointers on how to apply proven enterprise architecture processes within your enterprise. We must adopt an agile incremental method as we have seen "Big Bang" approaches fail. This means we need services based enterprise architecture practices run with project disciplines rather than one-off exercises to document what we have today and its problems.

New Pages


  1. 10:12, 9 June 2008 ‎Test (hist) ‎[17 bytes] ‎Admin (Talk | contribs) (New page: === test page ===)
  2. 09:42, 25 February 2008 ‎Views and Viewpoints (hist) ‎[33 bytes] ‎Admin (Talk | contribs) (New page: ===Views and Viewpoints=== TO DO)
  3. 09:41, 25 February 2008 ‎Portal:GlossaryTerms:V (hist) ‎[1,365 bytes] ‎Admin (Talk | contribs) (New page: ===View=== A representation of the whole system from the perspective of a related set of concerns. [ANSI/IEEE Std 1471-2000 Definition] A view is what you see when looking from the chose...)
  4. 20:23, 10 February 2008 ‎IT and Business alignment (hist) ‎[38 bytes] ‎Admin (Talk | contribs) (New page: ===IT and Business Alignment=== To DO)
  5. 20:23, 10 February 2008 ‎SOA (hist) ‎[48 bytes] ‎Admin (Talk | contribs) (New page: ===Service Oriented Architecture (SOA)=== TO DO)
  6. 21:52, 7 February 2008 ‎Portal:Process:Awareness (hist) ‎[36 bytes] ‎Admin (Talk | contribs) (New page: ===Education and Awareness== TO DO)
  7. 21:51, 7 February 2008 ‎Ivory Tower (hist) ‎[827 bytes] ‎Admin (Talk | contribs) (New page: ===Ivory Tower=== A group of individuals working in isolation to create something that others will need use. Those looking up at the Ivory Tower group see people working at a level that do...)
  8. 20:38, 7 February 2008 ‎Mindmap (hist) ‎[367 bytes] ‎Admin (Talk | contribs) (New page: ===Mindmaps=== Mindmaps are used to represent ideas, tasks or other items arranged around a central theme. They are used to creaye a visual record and to classify ideas. Mindmaps can help ...)
  9. 20:22, 7 February 2008 ‎Brainstorming (hist) ‎[1,515 bytes] ‎Admin (Talk | contribs) (New page: ===Brainstorming=== One of the best Brainstorming techniques is the 3 stage BON - B(rainstorm), O(rganize), N(ame) ====Materials Needed==== * Paper * Pens * Biro * Marker * Cards * Blue...)
  10. 19:51, 7 February 2008 ‎TOGAF (hist) ‎[20 bytes] ‎Admin (Talk | contribs) (New page: ====TOGAF==== TO DO)
  11. 19:50, 7 February 2008 ‎Portal:GlossaryTerms:T (hist) ‎[188 bytes] ‎Admin (Talk | contribs) (New page: ===TOGAF=== The Open Group Architecture Framework. '''Local links''' TOGAF '''External links''' [http://www.opengroup.org/architecture/togaf8-doc/arch/ The Open Group TOGAF site])
  12. 16:37, 7 February 2008 ‎Portal:GlossaryTerms:S (hist) ‎[113 bytes] ‎Admin (Talk | contribs) (New page: ===SWOT=== SWOT (Strengths, Weaknesses, Opportunities, and Threats) analysis method. '''Local links''' SWOT)
  13. 16:27, 7 February 2008 ‎SWOT (hist) ‎[1,668 bytes] ‎Admin (Talk | contribs) (New page: ===Strengths, Weaknesses, Opportunities, and Threats (SWOT)=== An effective strategy is one that takes advantage of the organisation's opportunities by using its strengths and heading off ...)
  14. 16:06, 7 February 2008 ‎Business Strategy (hist) ‎[1,083 bytes] ‎Admin (Talk | contribs) (New page: ===Business Strategy=== The starting point to any business strategy is the strategic plan. Typically a business strategic plan contains the following: * Mission - Why does the business exi...)
  15. 21:26, 4 February 2008 ‎Root cause analysis (hist) ‎[1,917 bytes] ‎Admin (Talk | contribs) (New page: ===Root Cause Analysis=== TO DO)
  16. 21:24, 4 February 2008 ‎Pareto's law (hist) ‎[1,629 bytes] ‎Admin (Talk | contribs) (New page: ===Pareto's Law (aka 80/20 Rule)=== In the late 19th Century, Pareto established that 80% of the land in Italy was owned by 20% of the population. He later found this was the case in most ...)
  17. 17:03, 4 February 2008 ‎Managing Change (hist) ‎[9,916 bytes] ‎Admin (Talk | contribs) (New page: ===Managing Change=== ====Overview==== TO DO ====Understanding Change==== TO DO ====Planning Change==== TO DO ====Implementing Change==== TO DO ====Consolodating Change==== TO DO ====Furth...)
  18. 16:52, 4 February 2008 ‎Portal:Process:EA Frameworks (hist) ‎[2,236 bytes] ‎Admin (Talk | contribs) (New page: ===EA Frameworks=== TO DO)
  19. 09:34, 3 February 2008 ‎Portal:GlossaryTerms:example (hist) ‎[505 bytes] ‎86.165.213.253 (Talk) (New page: This page is an example of what an entry in our glossary would look like. ===Entry term=== Type a simple definition here. Type in a second definition here. '''Local links''' [[Inter...)
  20. 16:44, 2 February 2008 ‎EA frameworks (hist) ‎[26 bytes] ‎Admin (Talk | contribs) (New page: ===EA Frameworks=== TO DO)
  21. 15:56, 2 February 2008 ‎Portal:Contents/Portals (hist) ‎[2,359 bytes] ‎86.165.213.253 (Talk) (New page: ===All Portals=== There are two ways to look things up: by searching or by browsing. If you know the name of an article you are looking for, simply type it into search box in the left too...)
  22. 15:55, 2 February 2008 ‎Portal:UsefulLinks (hist) ‎[2,336 bytes] ‎86.165.213.253 (Talk) (New page: ===Useful EA Links=== List of useful resources providing information and hints around Enterprise Architecture. TO DO)
  23. 15:54, 2 February 2008 ‎Portal:ResourceBase (hist) ‎[2,555 bytes] ‎86.165.213.253 (Talk) (New page: ===Resource Base=== TO DO)
  24. 15:53, 2 February 2008 ‎Portal:InformationArchitecture (hist) ‎[2,305 bytes] ‎86.165.213.253 (Talk) (New page: ===Information Architecture===)
  25. 15:53, 2 February 2008 ‎Portal:Process (hist) ‎[2,688 bytes] ‎86.165.213.253 (Talk) (New page: ===EA Processes=== TO DO)
  26. 15:52, 2 February 2008 ‎Portal:TechnicalArchitecture (hist) ‎[2,299 bytes] ‎86.165.213.253 (Talk) (New page: ===Technical Architecture=== TO DO)
  27. 15:51, 2 February 2008 ‎Portal:BusinessArchitecture (hist) ‎[2,296 bytes] ‎86.165.213.253 (Talk) (New page: ===Business Architecture=== TO DO)
  28. 22:15, 1 February 2008 ‎Portal:Contents (hist) ‎[1,072 bytes] ‎Admin (Talk | contribs) (New page: ===An Agile IT Contents=== There are two ways to look things up: by searching or by browsing. If you know the name of an article you are looking for, simply type it into search box in the...)
  29. 22:06, 1 February 2008 ‎Portal:EnterpriseArchitecture (hist) ‎[6,178 bytes] ‎Admin (Talk | contribs) (New page: ===Enterprise Architecture=== TO DO)
  30. 14:30, 1 February 2008 ‎Portal:GlossaryTerms (hist) ‎[3,828 bytes] ‎Admin (Talk | contribs) (New page: The Glossary is intended to define terms essential to the understanding an implementation of Enterprise Architecture. It is not intended as a general-purpose glossary. [[Portal:GlossaryTe...)
  31. 21:52, 31 January 2008 ‎Enterprise Architecture (hist) ‎[5 bytes] ‎86.165.213.253 (Talk) (New page: To DO)
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