Descartes Systems Group provides a software solution that allows users in the shipping industry to communicate with one another. Its core product is the Global Logistics Network, which is best understood as transaction-driven. Descartes charges clients to send/receive messages, data, and documents on the GLN. Customers typically contract for a monthly minimum over a multiyear period. The GLN platform allows Descartes to upsell additional software modules as well, typically provided via a software-as-a-service model.