Update PRODUCTION_PROVISION_README.md

#70

provision/production/PRODUCTION_PROVISION_README.md

@@ -67,6 +67,8 @@ emacs /tmp/go-aws-credentials  # update the `aws_access_key_id` and `aws_secret_
 
 3. Prepare and initialize the S3 Terraform backend:
 
+"Initializing" a Terraform backend means that you are getting ready to save a bundle of EC2 and networking states to S#, so that you and other developers in the future can discover and manipulate these states in the future, bringing servers and services up and down in a coordinated way. These terraform backends are an arbitrary bundle and can be grouped as needed. In general, the production systems should all use a coordinated set, but you may create new ones for experimentation, etc. If you are trying to work with an already set state, jump to `4`; if you are experimenting, continue here with `3`.
+
 ```bash
 
 # The S3 backend is used to store the terraform state.