Nagasaki Prefecture Starts Using the CloudSign Electronic Contract Service

Bengo4.com, Inc. (Minato-ku, Tokyo; Taichiro Motoe, Representative Director, President, and CEO, Lawyer; hereinafter the “Company”) announces that its contract management platform, CloudSign, has been selected to be used in a joint use project being implemented by the Nagasaki Municipal Administration Promotion Council, and the Company has provided support for the adoption of CloudSign to the governments of Nagasaki Prefecture (Governor: Kengo Oishi) and Higashisonogi-cho (Mayor: Iichiro Okada).

CloudSign has an implementation share of about 70% among municipalities across Japan and continues to promote contract digitalization as the e-contract servicer that is the most popular*1 among provincial municipalities.

*1: Comparison based on in-house survey of the number of municipalities deciding on implementation following a value contract from information on public solicitations, tenders and proposals released by municipalities nationwide. Data as of August 1, 2025.

Nagasaki Prefecture is promoting the digital reform of administrative services in accordance with the 2025 Nagasaki Prefecture Administrative and Financial Management Plan.  As part of this plan, the prefectural government is reviewing its seal-requiring, paper-based, and in-person procedures. To reform the work styles of government officials and improve convenience for businesses, they will start the trial operation of the electronic contract service in September 2025. Higashisonogi-cho was an early adopter of the service, having introduced it in July 2024.

CloudSign is being implemented with the aim of digitizing all contract procedures that were previously paper-based and in-person processes, optimizing business operations and accelerating digital transformation initiatives. The elimination of face-to-face document-based services is expected to increase convenience for town residents and local government staff while businesses that use the e-service will also benefit from more efficient contract procedures and lower costs. CloudSign is expected to make it possible for businesses to concentrate more on their business activities and to reduce the burden of providing counter services on local government staff.

■ CloudSign implementation plan for municipal and prefectural governments: https://www.cloudsign.jp/government/

■ About CloudSign: https://www.cloudsign.jp/

CloudSign is a contract management platform that enables digitization of everything from contract execution to management and AI review. The electronic signatures and timestamps are compliant with the Act on Electronic Signatures and Certification Business, ensuring smooth and secure contract execution. CloudSign also began offering Japan’s first ever My Number Card (individual number card) signature capability as part of its general-purpose contracting service in 2023. In addition, the platform shortens the time required for the entire contracting process through the active adoption of AI technology including an AI contract management capability and an AI-powered contract review service, CloudSign Review. CloudSign has become the no. 1 service in terms of the percentage of sales in the electronic contract market.*2 It has been widely adopted, currently used by over 300 companies and local governments.

*2: Market share in “New Markets of Software Business 2024” (2023 result of e-contract tools) by Fuji Chimera Research Institute, Inc.