I think we all have made some huge projects for interoperability with such different technologies, like IBM, Microsoft, Sun, Oracle, MySql and Macromedia, putting them all together using several SDK's and core technologies as XML, EJB's, WCF, etcetera.
"So much fun"... so where's the challege?
Do you have any ideas of really difficult interoperability scenarios? or any "dreamed milestones" for interoperability?
Thanx