Third party data is inefficient, low effect, CPA is expensive, do not rely on easy - In the past few years, such a reference has increased about third party data. On the other hand, it is important not to reliably rely on third-party data, but to use it at an appropriate timing in terms of measures after learning the appropriate usage method. In this session, discussions will be made while touching the fundamental parts such as the difference between marketing data and measurement data. Text by ad: tech tokyo official