Hitachi Data Systems has been in IT since 1989, and their history in the market goes back in to 60's or 70's. Now rebranded Hitachi Vantara, most of their revenue was competition was in the same space as EMC (now owned by Dell) for enterprise data storage. They are a wholly owned subsidiary of Hitachi, which you can think of like GE or something, they are in everything. The market for enterprise software and hardware is massive and often completely under the radar for an audience like HN.
Do you have some knowledge to share about s3 being built on a commercial storage platform? I was informed it was commodity and custom parts in pcs with cheap spinning rust and a lot of redundancy.
https://en.wikipedia.org/wiki/Hitachi_Data_Systems