Publisher Summary This chapter deals with globalization of data and transactions on Websites. In the case of a global Web application, identifying the locale and preferences of the customer is required in order to provide content that is tailored to their language and culture. The traditional approach to Web globalization uses the identified locale and customer preferences to present and express information in a personalized manner. Personalization and usability enables customers to feel as if they are interacting directly with representatives of the business during Website visits. However, attracting and capturing an international customer are not the only challenges of Website globalization. Of equal importance is the ability to obtain globally diverse customer data, process global business transactions, and integrate global business data with more traditional enterprise data. Addressing these additional data-oriented challenges requires a conceptual separation of presentation from data.