After some years of relative stability, Java-based Web application development  is in a season of innovation. In this JavaWorld podcast, Andrew Glover talks with Sun Microsystems' Director of Web Technologies Tim Bray about forces for change in the Web development and deployment space. Tune in for Bray's inside perspective on current trends in Java Web development, including the long-term outlook for dynamic languages on the JVM, new ideas about data persistence and storage, the "outrageously, obscenely hard" problem of concurrency, and what Bray calls the "sweet spot" of cloud computing: platform as service.