Telefonica Brasil, known as Vivo, is the largest wireless carrier in Brazil with 100 million customers, which is equal to about 39% market share. The firm is strongest in the postpaid business, where it has 65 million customers, or about 41% share of this market. Wireless services and equipment contribute about 70% of total revenue. Vivo is the incumbent fixed-line telephone operator in Sao Paulo state and, following the acquisition of GVT, the owner of an extensive fiber network across the country. The firm provides internet access to 7 million households on this network. The firm also sells pay-tv and phone services to its fixed-line customers. Finally, corporate data and IT services, including cloud computing support, contribute about 8% of total revenue.