Cornerstone Information Systems develops travel automation software for travel agencies that automates many of the complex and time-consuming aspects of making travel reservations. Their products are categorized as mid-office automation and information management products. Mid-office automation lets travel agencies create custom business rules to validate reservation accuracy, monitor travel policies, perform file finishing, prepare itineraries/invoices and process ticketing. Data management lets travel agencies and companies mine travel data from a variety of sources, including GDS and back-office systems and view travel spend, identify trends, monitor policy adherence and improve profitability.