Nothing about Express or Express Plus is antithetical to custom codes, as far as I know, and I can’t imagine that Standard has any architectural changes that would make them easier or harder to set up.
Do you know if there are any documents that provide some info on deploying custom codes to OpenERM running on AWS or how to access server files on AWS? It seemed like I need to access the docker running on AWS in order to access the server files from what I’ve read but I could be totally wrong…