The CNMC publishes a study on the online advertising sector in Spain* It analyses the competition conditions and warns that there is a high concentration level.It estimates that Google and Facebook absorb more than 70% of the market revenue. It points out risks such as opacity and other behaviours, which can reduce consumer welfare. It makes a series of recommendations to improve competition and regulation in this type of digital market. The CNMC today presented the "Study on the competition conditions in the online advertising sector in Spain" (E/CNMC/002/19). This type of advertising has become the main source of financing for disseminating content over the Internet and is the main way in which platforms such as Google and Facebook obtain income. Advertising is a key element

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