alt Hacker NewsThat is actually surprising to me. Claims like that are pretty common, they make sense and they should be true, so even though I don't really know AWS (/Backblaze/Azure/whatever) redundancy planning in enough detail, I used to trust them. It's really worrying when they outright say it will be ok, and then a week later it turns out to be not ok.
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The caveat is always "if you're using the service correctly" which is not necessarily free. Meaning taking advantage of multiple geo zones, building in redundancy to your stack, etc. Like everything he said is possible if your technology stack living in AWS was designed to survive it. Everyone who has ever had the "we lost your data" email from AWS knows at the end of the day the cloud is just someone else's data center with neat provisioning tools and services.
The devil is always in the details. Somehow I feel that when we offload the responsibility to some one else we get this feeling that the other person/entity would be doing full diligence and whatever else is required to carry out the job perfectly. However in reality most of the times they just do the bare minimum to pass your evaluation criteria to get the job.