NielsenIQ is a global measurement and data analytics company that provides insights into consumer behavior and media consumption. The company was founded in 1923 as the AC Nielsen Company and has since grown to become a leading provider of market research and audience measurement services. NielsenIQ operates in over 100 countries and has a diverse client base that includes media companies, advertisers, and consumer goods manufacturers. The company's services include audience measurement, advertising effectiveness, consumer insights, and product innovation. NielsenIQ is known for its Nielsen TV ratings, which are used to determine the popularity of television programs and inform advertising decisions.