Hi amx2012,
What kind of Blob storage and retrieval scenarios are you looking for?
Premium Storage is used for Page Blobs, which are usually VHD files that back the OS and Data disks for an IaaS VM. This kind of storage is SSD's and is really fast.
Standard Storage is used for block blobs and append blobs, and can be used to store any kind of files.
Which are you looking for?
Robin
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Microsoft MVP, Client App Dev