Amazon S3 vs Azure Blob Storage

• Highly available and redundant; we do not worry about the service having downtime
• Simple usage from multiple different frameworks using Amazon's SDKs, or roll your own
• A large number of bucket policies and security adjustments to tailor usage to customer needs
• Regional support for storing assets in particular locations around the world

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• Reduced cost. We were able to reduce our storage infrastructure by several hundred terabytes by consolidating redundant copies and dedupe/compression on files.
• Extremely high level of redundancy. We can replicate data in a variety of ways that we would never have been capable of on our own hardware.

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• No support for object versions retention: There can be a retention policy(days or number) for object versions that are stored in S3 so that we don't have to worry about paying extra for all the old versions of an object in the bucket.
• No feature for replication within a region: Currently AWS does not support replication within a region. Also, having to enable versioning for buckets in which you need replication makes it even more costly.
• Confusing pricing: The pricing model of S3 can be a little confusing for a new customer with questions regarding data transfer from other AWS services, between buckets or data transfer to the outside world.

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• One thing we wish was done better is more guidance for building it out from day one. We did not know what we were doing and until we hired an implementation person that understood what we wanted to do. We spent a lot of time and money doing things over several times.
• Help customers hook up with talented (local) implementation specialists would be great.

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• It practically eliminated some real heavy storage servers from our premises and reduced maintenance cost.
• The excellent durability and reliability make sure the return of money you invested in.
• If the objects which are not active or stale, one needs to remove them. Those objects keep adding cost to each billing cycle. If you are handling a really big infrastructure, sometimes this creates quite a huge bill for preserving un-necessary objects/documents.

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• Azure Blob Storage is just way cheaper than anything we could afford to do on-prem. Forecasting spend is way easier with predictable growth than it is with large capital expenditures every few years, and that ability to grow or shrink dynamically is simplifies things.

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