Rust can be used to write all kinds of software (vertically scalable) and the development of software artifacts can be parallelized (horizontally scalable).

while it excels in the lowest half of the stack, it’s pretty ok everywhere else too.

The rust golden rule:

how function signatures are mandatory and authoritative and explicitly define the interface both for the callers of the function and for the function’s body. more

The second feature of Rust is its module system. It's first class support of the concept of libraries.

The third is cargo with its rigid specification for what a package of rust code.