Why is it that many data utilization projects or platforms in the digital marketing world cannot meet the expectation which was set at the beginning, and fall into a "Trough of Disillusionment"? The reason is simple. Because it is likely system-driven / technology-driven, not purpose-driven at all. In this presentation, let's think about what is the most important thing to evolve vague "DX project" to purpose-driven project to be succeeded.