Who uses FaaS successfully? O get it for very bounded use cases, but was never able to really get a ton of use out of it other than gluing different AWS things together.
I’ve successfully used on-prem fn as a connection layer beneath API gateways and ESBs, but for cloud projects every time I use them (regardless of the provider), I end up swapping them out for microservices before too long. Deployment and management have always lagged far behind on-prem solutions.