I would recommend that you use Soap::Lite. Soap looks like the way to go if you want to be buzzword compliant: interoperability, future proof, multi platfrom... (at least good for your marketing).

Besides, there are quite a bunch of excellent "proof of concept" implementation documents out on the web. Apart from the obvious, a search at xml.com will give you excellent examples.

Well, maybe I'm biased towards using XML...

Update: A quick search revealed a sample chapter Writing SOAP Web Services from the O'reilly book Programming Web Services with SOAP, with a section on "Creating Web Services in Perl with SOAP::Lite". It's good to see how simple the example client/server in Soap::Lite is, compared to other implementations in Java and VBscript...

Hmm, I'm getting more biased I'm afraid!

--
Cheers, Joe
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