Why not support all three...S3, Coldline and Azure Blob?
Well, Cloudian invested a great deal in being able to track the AWS S3 API very closely. This allowed Cloudian to tier data to S3 and to Glacier, although Glacier has a separate API. It makes sense for Cloudian to support tiering from Cloudian clusters to Google Coldline because it has some advantages over AWS Glacier in terms of data availability. So, if Cloudian is now able to tier data to AWS S3/Glacier and Google Coldline, why not Azure Blob? This would basically give Cloudian customers a choice advantage when it comes to tiering data .