The Portal Site of Official Statistics of Japan, e-Stat (the "Site"), launched on 1st April 2008, delivers the one-stop service for official statistics of the Japanese government, which is pursuant to "the Optimization Plan of Business Processes and Systems of Statistical Surveys and related work" (Ministries CIO Council decision, 31 March 2006). Under the Optimization Plan, which is promoted by the Statistics Bureau, Ministry of Internal Affairs and Communications with collaboration of Ministries and Agencies, the Site aims to gather information from statistical departments of Ministries and Agencies, and provides general public with statistical data, schedule of release, etc.

The Site is managed and maintained by the National Statistics Center.