企业级应用系统体系架构soa概述

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1、企业级应用系统体系架构（八）SOA概述ChenHaopengSunday,August15,2021References：IBMRedbook:PatternsServiceOrientedArchitectureandWebServices1ThebusinessdriversforanewapproachWhileITexecutiveshavebeenfacingthechallengeofcuttingcostsmaximizingtheutilizationofexistingtechnologyAtthesametimetheyhavetocont

2、inuouslystrivetoservecustomersbetterbemorecompetitivebemoreresponsivetothebusiness’sstrategicpriorities.Therearetwounderlyingthemesbehindallofthesepressures:HeterogeneityandchangeThebusinessdriversforanewapproachHeterogeneityMostenterprisestodaycontainarangeofdifferentsystems,applic

3、ations,andarchitecturesofdifferentagesandtechnologies.Integratingproductsfrommultiplevendorsandacrossdifferentplatformswerealmostalwaysanightmare.Butwealsocannotaffordtotakeasingle-vendorapproachtoIT,becauseapplicationsuitesandthesupportinginfrastructurearesoinflexible.ChangeGlobali

4、zationande-businessareacceleratingthepaceofchange.Improvementsintechnologycontinuetoaccelerate,feedingtheincreasedpaceofchangingcustomerrequirements.ThebusinessdriversforanewapproachAsaresult,businessorganizationsareevolvingfromthevertical,isolatedbusinessdivisionsofthe1980’sandearl

5、iertothehorizontalbusiness-process-focusedstructuresofthe1980’sand1990’stowardsthenewecosystembusinessparadigm.Businessservicesnowneedtobecomponentizedanddistributed.Thereisafocusontheextendedsupplychain,enablingcustomerandpartneraccesstobusinessservices.Thebusinessdriversforanewapp

6、roachQuestions:HowdoImakemyITenvironmentmoreflexibleandresponsivetotheeverchangingbusinessrequirements?Howcanwemakethoseheterogeneoussystemsandapplicationscommunicateasseamlesslyaspossible?Howcanweachievethebusinessobjectivewithoutbankruptingtheenterprise?CurrentlymanyITexecutivesan

7、dprofessionalsalikebelievethatnowwearegettingreallyclosetoprovidingasatisfactoryanswerwithservice-orientedarchitecture.ThebusinessdriversforanewapproachInordertoalleviatetheproblemsofheterogeneity,interoperabilityandeverchangingrequirements,suchanarchitectureshouldprovideaplatformfo

8、rbuildingapplicatio