ITbook Holdings Co.,Ltd., through its subsidiaries, provides information technology (IT) consulting services in Japan. It offers business system optimization support, IT governance construction support, project management support, and IT strategy promotion backup services for governments and in private sector; digital services, such as system development, IoT, embedded systems, IT infrastructure construction, nearshore development, etc.; and trains professional human resources, as well as human resource development and temporary staffing services for IT industry, education industry, manufacturing industry, distribution industry, etc. The company also provides ground guarantee, housing completion guarantee, and housing inspection related services; sells goods; consulting services related to ground environment, land, buildings, etc.; support services, including investigation, analysis, and quality assurance; and undertakes ground investigation, ground improvement, subsidence correction, retaining wall construction, surveying, solar related, soil investigation, and real estate works. In addition, it develops systems comprising GeoWeb System, which prevents falsification of ground survey results by visualizing underground information through an application that encrypts the data and manages in the cloud; offers ground surveying and housing construction improvement, ground investigation, ground improvement works, and housing construction contracting services; and manufactures and sells exterior and interior wall materials for housing applications. ITbook Holdings Co., Ltd. was incorporated in 2018 and is headquartered in Tokyo, Japan.