Agenda
      •  What's SOA again?
      •  SOA Philosophies
      •  Entrenching SOA
          – The Service inventory / catalogue
          – Ownership
          – Governance
          – Centre of Excellence (CoE)
          – Pre delivery
                          What’s SOA Again?
      •  Two important definition:
           1.  SOA is an architectural approach centred around abstracting business 
               capabilities into reusable standardised services. 
           2.  SOA establishes an architectural model that aims to enhance the efficiency, 
               agility, and productivity of an enterprise by positioning services as the 
               primary means through which solution logic is represented in support of the 
               realization of strategic goals associated with service-oriented computing. SOA 
               Design principles, Thomas Erl, et.al,  Prentice hall
      •  SOA is about creating services in a managed, strategically aligned and governed 
         way
      •  Vendors cannot give you SOA – No such thing as SOA in-a-box.
                         SOA Philosophies
      •  There are different philosophies on how to 
         implement SOA
      •  Its not only about reuse
          – Standardisation
          – Legacy rejuvenation / retirement
      •  Understand the animal you have chosen
         SOA Philosophies – Which one is 
                                      yours?
                                   
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                       t          r          s                     
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                       l                     s         c          n
                       i          /          e         e          e
                       b                     c         j          e         Reuse
                       a          y          o         o          r
                       p          t                    r          c
                                  i          r
                       a          l                               S
                       C          i          P         P
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                                  a
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                                  a
                                  C
           SOA Philosophies – Where do I 
                                      stop?
      •  SOA is not for everybody
      •  Don’t build too many services – The Google rule
      •  Don’t “SOA” everything
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                                Task Services                                   n
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                                Data Services                                   n
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                               Utility Services                                 i
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