- Traditional view on the Web is human-computer interaction
- But... the web is also about computer-computer interaction!
       
          - Search engines
- Distributed transactions
- Remote services
- Computational grids
- etc.
 
- Data (XML data) has to be transferred
        
          - From one site to the other
- From one program to the other
 
XMLP: how would you tranfer XML data through the web?
			First building block for a more general Web Services architecture