Not only as a channel for relationships C Level Executive List and consumer loyalty, but also as an enhancer of other points of contact. In particular, this increasingly mature attitude emerges from the strong growth of the Mobile Advertising market , which in 2014 in Italy exceeded 300 million euros , registering an increase of 48% compared to 2013 ( see the graph C Level Executive List at the bottom of the article ). Advertising on the Mobile channel therefore at this point C Level Executive List represents 15% of all advertising investments on the internet. Only two years ago it was 5%) and 4.5% of total C Level Executive List advertising investments in Italy : a share that is more than quadruple compared to 2012 (1%). These are some of the data from the January 2015 report of the Mobile Marketing and Service Observatory of the School of Management of the Politecnico di Milano , presented at the Bovisa C Level Executive List campus of the Milanese university in a very crowded conference. Marta Valsecchi will present the new research results of the Observatories at IAB Forum 2015 However, the Polytechnic C Level Executive List researchers warn, the market remains highly concentrated, both in terms of supply and demand. On the supply side, three quarters of the C Level Executive List entire turnover is achieved by just two operators, Google and Facebook , which overall grow by almost 60%. On the demand side, over 60% of investments C Level Executive List concern “pure digital” companies , ie operators of Mobile Content and App and Mobile Commerce . «The majority of investments in Mobile - said Marta Valsecchi, Head of Research at the Mobile Marketing & Service C Level Executive List Observatory - remain linked to performance.