WWW.ADVISO.CA

Web servicesGlobal overview

Presentation for The Conference Board of Canada

Michel LeblancM.Sc. electronic commerce

PartnerAdviso consulting inc.

www.michelleblanc.comAll rights reserved, February 12th, 2003

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Objectives of the presentation

• Define the concept of “Web Services”.

• Identify some of the major challenges still ahead.

• Explain how “Web Services” could affect businesses.

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Definitions

• Web services are business applications delivered over the Internet.

• Web services are a set of protocols, standards and languages for creating open distributed systems on the Internet using platform-independent technology.

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Business Integration

Business unit 1

Business unit 2

Old fashion

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Creating a standard Interfacebetween applications

Commoninterface

Applicatio

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Applic

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Integration through Web-Services

Web Services standards and protocols

CRM ERPLegacy

SCMWeb application

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Integration through Web-Services

Web Services standards and protocols

Partner 1 Partner 3Partner 2

Client 2Client 1

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Technical challenges

• The objective is to allow disparate systems to “talk” to each other -share data and information – without human intervention.

• How can this be done ?• We need a common set of protocols

standards and languages so that “machines” can understand each other.

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Desired characteristics

• Loosely coupled software components• Openness

– (n2 vs n) – Platform/language/environment independent

• Flexibility– Simplicity – Scalability– Leveraging of legacy systems – Reusability

• Asynchronous and synchronous

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Definition

• Web services are the building blocks for creating open distributed systems on the Internet due to their asynchronous interfaces using platform-independent technology and their reusable components called services.

• A Web service is a loosely coupledsoftware component identified by a URI , that dynamically interact with other software components. Its interfaces and binding are capable of being defined, described and discovered via XML artifactsand the use of common internet protocols.

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Web Services

Simple ObjectAccess Protocol

(SOAP)

Web ServiceDefinition Language

(WSDL)

Universal DescriptionDiscovery and

Integration(UDDI)

Web services Flow Language (IBM), Web Service Conversation Language XLang – (Microsoft)Business Process Modeling Initiative

Registry

Workflow/Process

Service Description

Messaging

ebXML

Business ProcessSpecification

Schema (BPSS)

Registry/Repository

Collaboration Protocol

Profile/Agreement(CPP/A)

Message ServiceSpecification

(MSS)

Core XMLSpecifications

Extensible Markup Language (XML)

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E-BusinessVocabulary

User Interface

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Process

Message Oriented

Specifications

Community Vocabularies

Ex.: •Open Travel Alliance (OTA),•Parliamentary Language (ParML),•OpenFinancial Exchange (OFX)

Registry

Documents-oriented specifications

Security•Security Assertion Markup Language (SAML) •Web Services-Security (WS-Security)

voice GraphicsDevice

Interfaces

+450 XMLSTANDARDS

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Global Challenges

• Fragmentation of standards and protocols–National and International coordination

• Challenges in establishing shared meaning– Industry-specific vocabularies– Industry-specific business processes

• Legal issues

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Implications for business

• Web services offer an advantageous technology – to exploit new revenue generating services via the Web,– to save IT and operating costs, – and to integrate data and processed within the firm

and across the supply and demand chain.• In managing IT, web services

– Lower the complexity of IT infrastructure.– Take advantage of existing hardware, software and

programming abilities within the organization.– Allow reusability of software module once created. – Decrease the lock-in towards software vendors.– Lower development and adaptation costs.– Take advantage of the nature of the World Wide Web.

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Adoption

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Colorado Colorado DeptDept. . OfOf Agriculture, Agriculture, Continental Continental AirlinesAirlines, Dollar , Dollar RentRent a Car, Dupont, JP a Car, Dupont, JP Morgan Chase, State Morgan Chase, State ofof New New Mexico.Mexico.

AmazonAmazon, , eBayeBay, , FedexFedex,,GoogleGoogle, UPS, UPS

Early adopters

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Deployment

••If one uses Web services to replicate what would If one uses Web services to replicate what would be done with the traditional EAI or B2Bi solutions, be done with the traditional EAI or B2Bi solutions, one will not obtain substantial benefits or savings. one will not obtain substantial benefits or savings.

••Savings can be obtained only if one focuses on Savings can be obtained only if one focuses on the valuedthe valued--creating business processes and creating business processes and implement a loosely coupled serviceimplement a loosely coupled service--oriented oriented integration. integration.

••Seek simplicity and results.Seek simplicity and results.

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Deployment

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Questions for Business Leaders

• What new ways could you interact with your trading partners to save costs and create value?

• What new revenue-generating services can your organization offer via Web services?

• How can you use Web services to reduce IT costs and time to delivery?

• Do you have the expertise to set up Web services? If not, how to acquire them?

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Thank you

• Funding for this research was partially provided by the CIRANO.

• Special thanks to Gilbert Babin, Robert Gérin-Lajoie, Jacques Robert and Adviso partners.

Copyright, www.Michel Leblanc.com , 2003.

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Annex 1

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Annex 2

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UDDI

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Annex 3

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Registry solution

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Annex 4