In the past we have run our e-commerce app on a JBoss4.0.3SP1 cluster talking to 2 web servers running IIS6.0, and currently we are running the cluster talking to 2 web servers running Apache 2.0.59. A firewall distributes the traffic round-robin.

But now a request has come from within our organization to use 4 web servers -- 2 of them running Apache 2.0.59 and 2 running IIS6.0. Does anyone have experience with using Apache and IIS simultaneously to serve the same e-commerce site, with half the traffic going through Apache and the other half through IIS? Can it be done? Any caveats?

Thanks,
Dave