"An important part of using XML for web publishing is content delivery. Although XML-to-HTML conversion is partially possible in browsers such as Internet Explorer, the reality is that HTML or XHTML will be served from web servers for a long time to come. This means server-side XML transformation is the most viable option for publishing with XML today."
"Server side transformations can be handled at various levels. The most basic of these is static transformations (e.g., using an XSLT processor and some shell scripts), but this method can quickly become awkward, and is not satisfactory for dynamic web sites. Another option is application server environments such as Zope or Enhydra. If you have a real need to use these products, they are a good choice. But keep in mind that they have a tendency to operate within their own enclosed universe."