[Radim]

Your lack of punctuation and odd syntax makes me wonder, but if I understood your post correctly, you claim that building with AWS is somehow safer / more robust / more future proof than building with OVH? A technical judgement?

If so, I vehemently disagree. I've been a consultant for 10+ years too and seen 50+ companies from the inside, from startups to behemoths – including AWS itself.

Companies running a tight ship around resources were generally technically superior to those using AWS. "Hanging together by a thread" indeed, playing the AWS bingo of "use a flaky soup of 3-letter-acronym-services to cover technical inaptitude".

AFAIR the AWS versions of Spark and Elasticsearch were abysmal to the point of being unworkable. At least two years ago, maybe it's better now.