VendorLink is a collection of Representational State Transfer (REST) URIs encapsulated in a web service for use by third party entities. Third party vendors, may use REST interfaces to read data from or write data to ProgressBook's StudentInformation or GradeBook. VendorLink is the preferred method used by Ohio ITC's (Information Technolgy Center's) to interface with the ProgressBook suite. If you have third party software vendors that have data access needs please contact Student Services and we can direct them to obtain information about this web service.