This presentation outlines best practices for designing SOAP based web services for use in exchanging information between systems. The presentation was given on Feb 24 at the Vancouver Tech Fest by Lawrence Chan and Jeff Pennal of OpenRoad Communications Ltd.

1. Designing Interoperable Web Services Lawrence Chan Jeff Pennal OpenRoad Communications Ltd. Vancouver Java Users group http:// www.openroad.ca/vanjug /

3. The Promise It’s just XML! Cross Platform! A standard! Network Transparent! http://www.flickr.com/photos/tookie/183503927/

4. The Reality Hard to debug Poor Performance Poor compatibility http://www.flickr.com/photos/tom_vac/373021521/

5. So why bother? It works.

6. Real World Examples : Performance

10. Real World Examples : Debugging

15. Real World Examples: Flexibility

23. Java vs .NET type comparison System.DateTime DateTime DateTime Calendar System.Double Double double double System.Single Single float float System.Int64 Long long long System.Int32 Integer int int System.Int16 Decimal short short System.SByte -N/A- sbyte byte System.Boolean Boolean bool boolean System.String String string String .NET Framework Type VB.NET C#.NET Java

25. Pop Quiz! This technology originally developed by Dave Winer, is considered to be the precursor to SOAP. What is XML-RPC?

26. Pop Quiz! This technology provides a platform-independent , XML-based registry for businesses worldwide to list themselves on the Internet. What is Universal Description, Discovery, and Integration (UDDI)?

27. Pop Quiz! These are the two encoding mechanisms for SOAP attachments. What are MIME and DIME?