NixOps also builds your stuff locally and copies it (probably with nix-copy-closure).
Building locally (which NixOps does and probably also deploy-rs) vs building remotely (which most other systems seem to do) is one main difference between deploying solutions. Did you know these two pages:
- Applications - NixOS Wiki
- GitHub - nix-community/awesome-nix: 😎 A curated list of the best resources in the Nix community [maintainer=@cyntheticfox]
They list some different solutions.
NixOps can even set up your AWS resources.