> who sets them? in which file? Who can/will override them? The ops team. Environment variables are a great way of separating operational concerns from busines

> who sets them? in which file? Who can/will override them? The ops team. Environment variables are a great way of separating operational concerns from business logic. Environment variables are great because your application is agnostic about how the configuration is sourced. Let the ops/infra team handle that. > I dont like that any program can modify the PATH variable as example. And ... why not? Child processes can't modify the environment of parent processes. Environment variables flow downwards.