Presumably the normal way (since they're talking about hosting bills). Rust is faster than Python assuming you don't go out of your way to make an inefficient p

Presumably the normal way (since they're talking about hosting bills). Rust is faster than Python assuming you don't go out of your way to make an inefficient program, and typically consumes fewer resources (though not always, but for roughly equivalent programs it should). This means you can get away with either fewer instances to perform the same amount of work, or the same number instances but for less total time. (Which benefit you get depends on the style of your system, but both will save you money.)