Non tech centric people go with options which are cheap and just work -> MS products. You buy windows, you buy 365 you buy Azure , makes things cheaper. IT product centric companies focus on quality which you get on AWS.
No doubt most banks would just go with MS products but fintech banks are with AWS - n26, revolut, transferwise (not a bank though).
However it's the best not to rely on any single provider and keep your eggs in different basket. But AWS is the first choice when you think about quality. MS the first when you think about cost cutting.
> Non tech centric people go with options which are cheap and just work -> MS products. You buy windows, you buy 365 you buy Azure , makes things cheaper.
This is quite far from the truth as while they do work they are not cheap. G-Suite is (or used to be when I last checked) significantly cheaper than office 365, but everybody wants excel so ....
No doubt most banks would just go with MS products but fintech banks are with AWS - n26, revolut, transferwise (not a bank though).
However it's the best not to rely on any single provider and keep your eggs in different basket. But AWS is the first choice when you think about quality. MS the first when you think about cost cutting.