speedata Publisher is a professional, non-interactive layout engine for database publishing. It generates high-quality PDF files from XML data and XML layout instructions, making it well suited for product catalogs, price lists, and other documents with demanding layout requirements. The layout description language allows complex, nearly arbitrary page designs while keeping the job as straightforward as possible. It can be thought of as "XSL-FO on steroids" or a server-side alternative to desktop publishing tools like InDesign. It is production-proven and used in commercial environments worldwide. The core typesetting engine is LuaTeX (not included; must be provided separately via download.speedata.de or the official packages). The Go front-end binary (sp) drives the build process and handles XML parsing, resource loading, and orchestration of the LuaTeX process.