Use Case: Saved over $1.4 million in annual DM spend For: Major airline’s eCommerce website Client Challenge: The client had unnecessarily large spend on their product catalog through Direct Mail. They want to reduce the number of DM sends while maintaining sales. Principle's Approach: - Generated data template by guiding the client to prepare a data input file. - Setup Google BigQuery with a logistic regression model used for machine learning. - Verified the accuracy of the model and implemented a feature value of engineering. - Deployed a model to calculate “purchase probability resulted from the catalog”. - Built and recommended a customer list that has a high purchase possibility.