IBM Cloud Object Storage

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Backblaze B2

Azure Blob Storage is a storage solution provided by Microsoft Azure as a part of its cloud services. Azure Blob Storage share many similarities with Amazon S3's object storage while providing it's own proprietary protocol. With Azure Blob Storage you can create data lakes for your analytics needs, and provides storage to build powerful cloud-native and mobile apps. Optimize costs with tiered storage for your long-term data, and flexibly scale up for high-performance computing and machine learning workloads.

Linode Object Storage provides high availability S3-compatible object storage that allow you to store your data across a cluster of servers for high availability and durability. Linode Object Storage is most commonly used by developers to store images, videos and other assets for web applicaitons and software applicaitons.

DigitalOcean Spaces is an S3-compatible object storage with a built-in CDN that makes scaling easy, reliable, and affordable. With DigitalOcean Spaces you can easily store and deliver vast amounts of content for your web application or software.

Storage made simple. Faster than Amazon's S3. Less expensive than Glacier.

Amazon S3 or Amazon Simple Storage Service is object storage services provided by Amazon. It provides easy-to-use management features so you can organize your data and configure access controls to meet your specific business, organizational, and compliance requirements. Amazon S3 is used by millions of applications world-wide and is designed for 99.999999999% of durability.