Biz Storage File Share is an enterprise cloud storage service from NTT DOCOMO Business (formerly NTT Communications), built for reliable file sharing. It provides browser-based file transfer, shared folders, and approval steps so teams control who receives files.

The platform keeps backup copies in data centers across both the Tokyo area and Kansai region, switching over automatically if one location goes down. Pricing is based on storage capacity with no per-user charges, making it practical for large teams. The service holds the ASP/SaaS Safety and Reliability Certification, Privacy Mark, and DX certification.

Each user can switch the interface between Japanese and English, and email notifications are also available in English.