Keiji Yoshida is a data engineer in Data Labs, LINE Corporation. He has worked in a project for democratizing data at the company, that means, making data of a centralized Hadoop cluster public within the company while controlling each employee’s data access strictly. He created a well access controlled and scalable web based data analysis platform named “OASIS”. On this platform, users can extract, analyze and visualize data by writing Spark application code or a Presto query. Result can be saved as a form of a notebook, and it can be shared only within a team or a department.