Telefónica is one of the world leader’s integrated operators in the telecommunication sector, providing communication, information and entertainment solutions, with presence in Europe, Africa and Latin America. It operates in 25 countries. As of March 2012, Telefónica's total number of customers amounted to 309.4 million. Telefónica leadership strategies in sustainability aim to position the ICT sector in the center of the solution of major global sustainibility challenges. GeSI activities contribute to Telefónica’s sustainaiblity programs, bringing tangible benefits specially in technical documents development, global ICT sector presence and ICT sustainability agenda promotion.