Z.com Cloud Object Storage is a file-based object storage service offered under Z.com Cloud, operated by GMO Internet Group, one of Japan’s leading internet and hosting providers. It offers scalable storage for large volumes of files, such as media assets, backups, and logs, with infrastructure hosted entirely in Japan.

Although the service is not S3-compatible, it provides a custom REST-style API and is designed for integration with internal systems or web applications that require large-capacity, durable object storage.

Pricing is usage-based and includes:

• Storage capacity: charged per GB per month
• Request volume: based on the number of API operations performed
• Outbound data transfer: free of charge

With a predictable billing model and domestic infrastructure, Z.com Cloud Object Storage is a practical choice for organizations seeking simple, API-accessible cloud storage backed by a Japanese provider.