Identifying Web Service Integration Challenges Frank Goethals SAP-Research Chair on ‘Extended Enterprise Infrastructures’ K.U.Leuven – Belgium IRMA Conference May 18, 2003 Intro10 ChallengesConclusions

2 Introduction “A Web service is Intro10 ChallengesConclusions a software system identified by a URI, whose public interfaces and bindings are defined and described using XML. Its definition can be discovered by other software systems. These systems may then interact with the Web service in a manner prescribed by its definition, using XML based messages conveyed by Internet protocols.” [ Enterprise Application Integration (EAI) vs. Business to Business Integration (B2Bi) /7

3 Integration Challenges 1.Describe & Discover WSDL, DAML-S; UDDI, WSIL 2.Communicate SOAP 3.Transactions BTP, WS-transaction 4.Composition BPEL4WS, BPML, WSCI, WSCL /7 Intro10 Challenges: 1-4Conclusions HTTP, FTP, IIOPSOAPWSDLUDDI

4 UDDI: Universal Description Discovery and Integration WS Provider WS Requestor WS Broker– UDDI business Registry WS Requestor WS Broker– UDDI business Registry 1. Register service and company 1. Register service and company 2. Get service and company information 2. Get service and company information 3. Look up technical details 3. Look up technical details 4. WS binding Intro10 Challenges: 2Conclusions /7

5 Integration Challenges Intro10 Challenges: 3/4Conclusions /7

6 Integration Challenges 5.Customization 6.Reliability 7.Security (WS-security, SAML, WSS) 8.Scalable, manageable, testing and debugging (Gartner’s WSMP, W3C, OASIS) 9.Business Documents (xCBL, UBL) 10.Combine different standards Intro10 Challenges: 5-10Conclusions /7

7 Conclusions Problem of semantics Still a long way to go… Intro10 ChallengesConclusions /7