OEX S.A., through its subsidiaries, provides sale and client support services and technologies. The company offers retail services, such as management of a network of stores for mobile phone operators; sales force leasing, and merchandising and retail surveys; field marketing; cash register, payments terminal, and POS management platform in one device. It also provides eCommerce services, including software house for eCommerce; marketplace B2B; warehousing and fulfilment; and customer experience solutions. The company was formerly known as Tell S.A. and changed its name to OEX S.A. in January 2016. OEX S.A. is based in Warsaw, Poland.