Marco, When I hear the term 'enterprise', I think not only about a technology set but also about the environment in which a solution is crafted and maintained. I associate Enterprise computing with large firms, large software development efforts, and development staff of widely varying ability. I have found Ruby to be a very productive tool and have found it capable for implementing a wide variety of solutions for which I might have used Java APIs. That said, I prefer to use Ruby on projects with small, high-skilled development teams. Features which make Ruby productive (dynamically typed, interpreted, etc.) seem to me to have the potential to become a liability in large projects (scores of developers) with staffs of widely varying ability whereas Java features which on the micro level are cumbersome and inflexible (static typing, compiled), in conjunction with rich tooling available for Java, make it more manageable to implement for large-scale efforts. In my view much of the recent debate between Java and Ruby enthusiasts fails to acknowledge that each of these tools have a valuable place and that a choice between them (at least for many projects) must include considerations not only of the merits of each technology but also of the human aspects of the environment into which they are deployed. Small consulting firms do not have to think about such considerations in the same way that a large corporate development project does. That said I certainly would not discourage use of Ruby in an enterprise context. I have certainly benefited from doing so. But know your team. Successful implementation of a technology is dependent on many factors beyond the capability of a particular technology. John-Mason Shackelford Software Developer Pearson Education 2510 North Dodge St. Iowa City, IA 52245 ph. 319-354-9200x6214 john-mason.shackelford / pearson.com http://pearsoned.com