Gunma Prefecture Introduces CloudSign for the Implementation of Electronic Contract Service

Bengo4.com (Minato-ku, Tokyo; Taichiro Motoe, Representative Director, President, and CEO; hereinafter, “the Company”) announces that Gunma Prefecture (Governor: Ichita Yamamoto) has implemented its contract management platform CloudSign. 
CloudSign︎ has been implemented in over 380 municipalities across Japan, giving it an implementation share of about 70%, and continues to promote contract digitalization as the e-contract servicer that is the most popular*1 among provincial municipalities.
Gunma Prefecture will start operating the e-contract service utilizing CloudSign in April 2026.  
 *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 April 1, 2026. 


■ Background of the implementation of electronic contracts and support at the municipalities
Multiple factors have converged to accelerate the implementation of e-contracts in municipalities. In addition to the 2021 revision of the Enforcement Regulations of the Local Autonomy Act, which made implementation easier, the concrete effects demonstrated in earlier cases of implementations by some prefectures and municipalities have been a major driving force, with attention garnered by the obvious quantifiable benefits, including time savings, labor cost reductions, lower costs for stamps, shipping and printing, and less need for storage space.
Another factor is that more prefectures and municipalities are feeling the benefits of using e-contracts thanks to accelerated implementation in some areas.

■ 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. The platform also 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 the electronic contract market*2, and is widely adopted by companies and local governments.

*2: Market share in “New Markets of Software Business 2025” (2024 result of e-contract tools) by Fuji Chimera Research Institute, Inc.