Exactly my experience. And not only about Databases.
At a previous job I was able to cut our infrastructure expenses by a lot (70%) by essentially have our infra being 1 load-balancer, 2 beefy application servers and 1 (+1 failover) PostgreSQL database. Each of the application server costs 300~ Euros p/m , 24 cores and 256GB of RAM. I have not experienced the same cost to perf ratio anywhere else.
At a previous job I was able to cut our infrastructure expenses by a lot (70%) by essentially have our infra being 1 load-balancer, 2 beefy application servers and 1 (+1 failover) PostgreSQL database. Each of the application server costs 300~ Euros p/m , 24 cores and 256GB of RAM. I have not experienced the same cost to perf ratio anywhere else.