David Ralston joined Expovision in 1999, bringing over ten years of extensive technology management and product development experience.  David’s domain expertise includes process engineering, internet servers and online transactions, database internals, and software systems development. Prior to joining Expovision, David worked for various world-class, high-tech companies as well as internet start-ups and credit services companies. David is the primary architect of Expovision’s technologically-advanced software system, EXPOBOOK.