Telefonica, S.A. (Telefonica) is an integrated and diversified telecommunication company. It is one of the leading mobile and fixed telecommunication service providers in Europe and Latin America. The company specializes in providing fixed and mobile telephony services. It offers data and business-solutions and services, wholesale services to telecommunication operators, mobile business, and value-added services, wireless data, Internet and other related services. Telefonica also carries out media and contact center operations through investments in Telefonica de Contenidos and Atento. The company operates through subsidiaries and branches in the telecommunication, media and contact centers industries. Telefonica is headquartered in Madrid, Spain.