Quantcast is an American technology company, founded in 2006, that specializes in AI-driven real-time advertising, audience insights and measurement.

[5] The company was built on the belief that digital advertising requires reliable data to be successful.

Initially the primary aim was to gather detailed, real-time insights on audience characteristics across the internet.

This private information is made publicly available to be used by marketers and publishers to accurately understand their audience in granular detail.

[6] In 2010, Quantcast's Publisher Program was the first syndicated online traffic measurement service to receive official accreditation from the Media Rating Council (MRC).