Service-Oriented Business and GovernmentService-Oriented Architecture ConceptsSOA Processes, Principles, and ToolsServicesLine of Business ServicesReusable Technical ServicesService ContractsWeb Services PlatformService Requesters and Service ProvidersApproved Products, Technologies, and FacilitiesService Governance, Processes, Guidelines, Principles, Methods, and ToolsSOA Governance Policies and ProcessesSOA Principles and GuidelinesKey Service CharacteristicsPrimary CharacteristicsLoosely Coupled ServicesWell-Defined Service ContractsMeaningful to the Service RequesterOpen, Standards-BasedSecondary CharacteristicsPredictable Service-Level AgreementsDynamic, Discoverable, Metadata-DrivenDesign Service Contracts with Related Services in MindImplementation Independent of Other ServicesConsider the Need for Compensating TransactionsDesign for Multiple Invocation StylesDesign Stateless ServicesDesign Services with Performance in MindSOA Guidelines for Service RequestersSOA Guidelines for Legacy Systems and Legacy ServicesTechnical Benefits of a Service-Oriented ArchitectureEfficient DevelopmentMore ReuseSimplified MaintenanceIncremental AdoptionGraceful EvolutionService-Oriented Architecture—Business BenefitsIncreased Business AgilityBetter Business AlignmentImproved Customer SatisfactionReduced Vendor Lock-In and Reduced Switching CostsReduced Integration CostsImproved ROI of Existing IT AssetsSummary