I'm not sure about your quantification of the overhead, I think you can have wins with severless there, but the other side of it is that you can make your server management a source of strength.
This is becoming unfashionable because it is arcane, but *nix (and Windows I'm sure) really provide some rich functionality and tunability that can let you move fast or reach performance/scale challenges that are very expensive or perhaps out of reach otherwise.
Of course, at one point I was told the same thing about managing your own hardware, and the thought of dealing with the jumpers on the back of the harddrive fills me with the same sense of frustration I'm sure a newer developer would feel when learning their disk is out of inodes for the first time.
This is becoming unfashionable because it is arcane, but *nix (and Windows I'm sure) really provide some rich functionality and tunability that can let you move fast or reach performance/scale challenges that are very expensive or perhaps out of reach otherwise.
Of course, at one point I was told the same thing about managing your own hardware, and the thought of dealing with the jumpers on the back of the harddrive fills me with the same sense of frustration I'm sure a newer developer would feel when learning their disk is out of inodes for the first time.