Even without owning the infrastructure, running in the cloud without know-how is very dangerous.
I hear tell of a shop that was running on ephemeral instance based compute fleets (EC2 spot instances, iirc), with all their prod data in-memory. Guess what happened to their data when spot instance availability cratered due to an unusual demand spike? No more data, no more shop.
Don't even get me started on the number of privacy breaches because people don't know not to put customer information in public cloud storage buckets.
I hear tell of a shop that was running on ephemeral instance based compute fleets (EC2 spot instances, iirc), with all their prod data in-memory. Guess what happened to their data when spot instance availability cratered due to an unusual demand spike? No more data, no more shop.
Don't even get me started on the number of privacy breaches because people don't know not to put customer information in public cloud storage buckets.