For 20 years, the Association for Internet Progress (SPIR) has represented the most important players in the Czech Internet economy from among publishers, media agencies, and technology companies with a turnover of more than 37 billion crowns per year. The services offered by SPIR members are used by over 90% of the population of the Czech Republic. Member companies pay 3 billion crowns a year in taxes and other fees to the state budget and employ 7,500 people throughout the Czech Republic. SPIR operates the only official measurement of Czech Internet traffic NetMonitor, monitoring of Internet advertising AdMonitoring and provides expert analyses of the development of the Czech Internet market. SPIR is a member of IAB Europe (Interactive Advertising Bureau), Europe's largest professional organization covering companies in digital marketing and advertising ecosystems.