Backblaze B2

Backblaze B2 is a cloud object storage service with an S3-compatible interface. Teams use it to keep files, backups, datasets and model data in one place that many tools can reach.

B2 stores your data as objects inside buckets. You upload and download files with standard S3 clients, so many existing scripts and apps need only small changes. The service is designed for large volumes of data that must stay available to compute running elsewhere, such as GPU clusters and AI training jobs. You can set access rules and encryption to match your security needs.

• S3-compatible object storage
• Server-side encryption and object locks
• Fine-grained access management
• Hundreds of prebuilt integrations with other tools

This suits AI teams that store training data, developers building data-heavy apps, and GPU cloud providers that need storage behind their compute. Teams that already use S3 tools will find the setup familiar.

The vendor describes its pricing as predictable and lower in total cost than many alternatives, and you can sign up without a credit card. Check the pricing page for current rates before you plan a budget for large storage volumes. Review the encryption and lock settings before you store sensitive records, since your team sets those controls.