The changing focus of AWS S3
Briefly

"Directory buckets organize data hierarchically into directories as opposed to the flat storage structure of general purpose buckets. There aren't prefix limits for directory buckets, and individual directories can scale horizontally," the docs explain.
"A remarkable thing over the past five and ten years is the uptick in analytics workloads directly over S3, the replacement of enterprise HDFS [Hadoop Distributed File System] clusters with MapReduce and Spark jobs," he told The Register.
Read at Theregister
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