XSLT stands for XML style sheet transformation and it as XML technology used to transform one XML into another XML or HTML format. XML and XSLT interview questions are commonly asked Java developers, who happen to use XML in their projects and mentioned XSLT as a key skill in their resumes. Given XML’s popularity as a data transfer protocol, many systems in the middle and back-office space use XML messages to transfer trade details, for example, Bookings, Settlement, and Confirmation systems use it as data exchange protocol. Since each of these systems performs some normalization, enrichment, and transformation on incoming trade messages, they use XSLT for that transformation.