Austin-based ProspX, a provider of hosted sales collaboration and automation software for the commercial insurance industry, revealed Tuesday that it has earned the business of one of the country's largest brokers. The financial impact of the customer win was not disclosed. ProspX identified its new client as Lanier Upshaw, a Florida-based independent insurance agency serving the Southeast. ProspX said its platform will help Lanier Upshaw;s broker, partner and carrier networks better connect with one another.