According to Gartner, more than 90% of Enterprises have mixed-mode (Java and .NET) data centers at present, and the number is only growing. As more and more applicaitons require back ends built on these technologies, interoperability between them is a concern. In this talk, Laurence Moroney will go into the different strategies that may be used to knit applicaitons built on the different types together. It will include Web Services, Bridging, ESB, EAI and application rehosting. It is intended to be a vendor-neutral survey covering each of the options available to the developer.