diff --git a/README.md b/README.md
new file mode 100644
index 0000000..f6e7a15
--- /dev/null
+++ b/README.md
@@ -0,0 +1,147 @@
+## TODOs
+
+- [x] Remove NixOS AMI generation dependency
+  - [x] PR to nixpkgs adding the all the regions currently available in order to get NixOS
+    AMIs available on them
+  - [x] Make sure that the AMIs are available
+  - [x] Refactor the Terraform config to just use the available AMIs instead of generating
+        them
+- [x] Figure out a way to hide the secrets
+  - [x] Change personal AWS tokens (due to commit history)
+  - [x] confirm that IOHK tokens have never been committed
+- [x] Add 2 different cardano-node versions to niv
+- [x] Add a let in replacement for all the servers targetHost
+
+## Steps to deploy with Terraform
+
+- There are regions that do not have NixOS AMIs so one need to generate one and upload it
+to those:
+  - jp
+  - sg
+  - au
+  - br
+- Export AWS Secrets
+- ~~For that we need an S3 bucket in each region and a set of specific IAM roles (https://docs.aws.amazon.com/vm-import/latest/userguide/vmimport-image-import.html)~~
+- ~~It is not possible to copy official NixOS AMIs from other regions to the ones we need,
+  so we need to generate ours and upload them~~
+  - ~~https://nixos.wiki/wiki/Install_NixOS_on_Amazon_EC2~~
+  - ~~https://github.com/NixOS/nixpkgs/issues/85857~~
+  - ~~The links above can help.~~
+  - ~~Notes: change home_region, bucket and regions vars and edit lines to make_image_public
+  if needed.~~
+- ~~After that get the AMIs for each region and add them to terraform configuration~~
+
+_**NOTE:** As of NixOS 22.05 release, AMIs for all AWS regions are available, so this step
+is no longer needed_
+
+## How to deploy
+
+In folder `dev-deployer-terraform`, there's `main.tf` that has the terraform
+configuration to deploy NixOS machines on different AWS regions. ~~This
+Terraform config also runs 2 bash commands: 1 to create a NixOS image,
+and a script to upload the image to an AWS bucket and import it as an image,
+making it available in all the regions necessary.~~
+
+To run the terraform config from a clean AWS configuration do the following:
+
+- Make sure all the regions you want are enabled;
+  - At the current time we do not have any instance in Bahrain, for example.
+    If we did, then we'd also need to enable global permissions, see:
+    https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_enable-regions.html?icmpid=docs_iam_console
+- Make sure the account has the necessary permissions;
+- Make sure your credentials are correctly configured:
+  - `aws configure`
+- ~~Make sure you edit `main.tf` and `create-ami.sh` to be in sync (e.g. S3 Bucket name,
+  home-regions, etc.);~~
+- Do `terraform init`;
+- Do `terraform plan` to check you haven't forgotten anything;
+- If everything looks good do `terraform apply` and let it run;
+- After finished you should have:
+  - ~~An S3 bucket;~~
+  - ~~A role and policy called `vmimport`;~~
+  - A security role for each machine's region enabling traffic;
+  - A key pair for each machine's region;
+  - An EC2 instance.
+
+~~Due to the way S3 buckets work if something goes wrong during the plan execution,
+you might not be able to perform `terraform destroy`. If that is the case you will have to
+delete all the stuff by hand if you want to rerun a script from a clean state. Maybe you can
+get without deleting everything and only the S3 bucket and then do `terraform destroy`. On
+the other hand if everything finishes successfully you will be able to perform `terraform
+destroy`, just make sure the bucket is empty before hand. NOTE: That the AMIs and
+respective snapshots won't get deleted so you will have to delete those by hand.~~
+
+~~I believe we'll only need to run the deployment once and if needed only rerun the script
+to make NixOS AMIs available in new regions. For deployment we should run something like
+`terraform apply -target=resource`.~~
+
+_**NOTE:** As of NixOS 22.05 release, AMIs for all AWS regions are available, so this
+information is no longer accurate_
+
+_THINGS TO HAVE IN MIND_:
+
+- ~~The `create-ami.sh` script will cache things in `$PWD/ami/ec2-images` so you might want
+to delete that when trying to obtain a clean state;~~
+- ~~You ought to rename the bucket if wanting to rerun the deployment from a previously
+deleted bucket since AWS might take some time to recognize that bucket was deleted.~~
+
+After having run the terraform configuration, you have to manually get the public ips
+for each machine and add them to the nixops network configuration file (inside folder
+`dev-deployer-nixops`. Then you should create a new nixops network and deploy it with
+`nixops create -d my-network network.nix` after `nixops deploy -d my-network`.
+You should be able to get the IPs for each regions by running the following command:
+
+`terraform show -json | jq '.values.root_module.child_modules[].resources[].values | "\(.availability_zone) : \(.public_ip)"' | grep -v "null : null"`
+
+_If one updates the NixOS version of the AMIs be sure to also update the nixpkgs version on
+niv to the same one._
+
+nixops will try to ssh into the machines as root so you might need to run:
+
+- `eval \`ssh-agent\``
+- `ssh-add ssh-keys/id_rsa_aws`
+
+Please _NOTE_ that if the machine you're using to deploy (local machine) has a different
+or incompatible nixpkgs version with the one in the remote side (remote machine that is
+going to get deployed) - you will notice this with stange errors such as
+"service.zfs.expandOnBoot does not exist" - you will need to modify your deployment to use
+a different nix path. So after creating the deployment and if you get weird errors as the
+one described previously:
+
+- Run `niv show` to get the nixpkgs version and url;
+- Copy the nixpkgs url being used;
+- Run `nixops modify -I nixpkgs=<url> -d my-network network.nix
+- Try again
+
+If you want to further configure each individual server you can look into:
+https://github.com/input-output-hk/cardano-node/blob/master/nix/nixos/cardano-node-service.nix#L136
+to see all the options available for configuration.
+
+## Material
+
+### Flakes
+
+- https://nixos.wiki/wiki/Flakes
+- https://www.tweag.io/blog/2020-07-31-nixos-flakes/
+
+### Deploy with nix
+
+- https://zimbatm.com/notes/deploying-to-aws-with-terraform-and-nix
+- https://github.com/tweag/terraform-nixos
+- https://github.com/colemickens/nixos-flake-example
+- https://github.com/edolstra/flake-compat
+- https://github.com/serokell/pegasus-infra
+- https://github.com/serokell/deploy-rs
+
+
+### Cardano
+
+- https://outline.zw3rk.com/share/15015d9b-a6c3-4a71-84fc-6c2ca0cac7cb
+- https://github.com/input-output-hk/cardano-node/blob/master/doc/getting-started/building-the-node-using-nix.md
+
+### AWS
+
+- https://nixos.wiki/wiki/Install_NixOS_on_Amazon_EC2
+- https://github.com/nh2/nixos-ami-building
+- https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/CopyingAMIs.html#ami-copy-steps
+
diff --git a/dev-deployer-nixops/network.nix b/dev-deployer-nixops/network.nix
new file mode 100644
index 0000000..aa068ae
--- /dev/null
+++ b/dev-deployer-nixops/network.nix
@@ -0,0 +1,473 @@
+let
+  # ifMainnet abstracts over the 2 cardano-node instances we will be running.
+  # i == 0 means the first instance that's going to run mainnet, other instances
+  # will run testnet.
+  ifMainnet = mainnet: testnet: i: if i == 0 then mainnet else testnet;
+
+  # import pinned niv sources
+  sources = import ../nix/sources.nix;
+  pkgs    = import sources.nixpkgs { };
+
+  # Double check if they are not pinned to the same version.
+  # If you want to change the version of a particular branch, for example:
+  # niv update cardano-node-testnet -b <branch>
+  cardano-node-mainnet = (import sources.cardano-node-mainnet {});
+  cardano-node-testnet = (import sources.cardano-node-testnet {});
+
+  # Machines IP addresses
+  af-south-1     = "";
+  us-west-1      = "";
+  sa-east-1      = "";
+  us-east-2      = "";
+  ap-southeast-1 = "";
+  ap-southeast-2 = "";
+  ap-northeast-1 = "";
+  eu-west-3      = "";
+
+  mainnet-port = 7776;
+  testnet-port = 7777;
+
+in
+{
+  network.description = "IOHK Networking Team - Network";
+
+  # Each deployment creates a new profile generation to able to run nixops
+  # rollback
+  network.enableRollback = true;
+
+  # Common configuration shared between all servers
+  defaults = { config, ... }: {
+    # import nixos modules:
+    # - Amazon image configuration (that was used to create the AMI)
+    # - The cardano-node-service nixos module
+    imports = [
+      "${sources.nixpkgs.outPath}/nixos/modules/virtualisation/amazon-image.nix"
+
+      # Doesn't matter if we use the mainnet or testnet ones since we are going to
+      # overwrite the cardano-node packages in the cardano-node service if needed.
+      #
+      # I am making t he assummption that it does not matter (at least for now) which
+      # service version we import here.
+      cardano-node-mainnet.nixosModules.cardano-node
+    ];
+
+    # Packages to be installed system-wide. We need at least cardano-node
+    environment = {
+      systemPackages = with pkgs; [
+        vim
+        yq
+        jq
+      ];
+    };
+
+    # Needed according to:
+    # https://www.mikemcgirr.com/blog/2020-05-01-deploying-a-blog-with-terraform-and-nixos.html
+    ec2.hvm = true;
+
+    services.cardano-node = {
+      enable = true;
+      instances = 2;
+      useNewTopology = true;
+
+      # If you wish to overwrite the cardano-node package to a different one.
+      # By default it runs the cardano-node-mainnet one.
+      # You ought to put this on a particular server instead of in the default atttribute
+
+      # cardanoNodePackages =
+      #   cardano-node-mainnet.legacyPackages.x86_64-linux.cardanoNodePackages;
+
+
+      # Note that in the `systemctl status` call we are going the instance
+      # running on a file called 'db-testnet-0', since the default environment
+      # is "testnet" and the db file is called after this environment variable.
+      # 'extraNodeInstanceConfig' does not overwrite the environment variable,
+      # only the nodeConfig values so, although misleading we will be running
+      # a mainnet node with a 'db-testnet-0' file.
+
+      extraNodeInstanceConfig =
+        ifMainnet config.services.cardano-node.environments.mainnet.nodeConfig
+                  config.services.cardano-node.environments.testnet.nodeConfig;
+
+      # We can not programatically give a particular environment for each
+      # instance, but luckily we can programatically give different
+      # producers/publicProducers (local and public root peers in P2P)
+      # depending on the instance.
+      #
+      # And due to the first fact we have to manually change the iohk
+      # relays depending on the correct instance environment
+
+      publicProducers = [ ];
+      instancePublicProducers =
+        ifMainnet [{
+          accessPoints = [{
+            address = "relays-new.cardano-mainnet.iohk.io";
+            port = 3001;
+          }];
+          advertise = false;
+        }]
+          [{
+            accessPoints = [{
+              address = "relays-new.cardano-testnet.iohk.io";
+              port = 3001;
+            }];
+            advertise = false;
+          }];
+    };
+  };
+
+  # Server definitions
+
+  server-us-west = { config, pkgs, ... }: {
+    # Says we are going to deploy to an already existing NixOS machine
+    deployment.targetHost = us-west-1;
+
+    # cardano-node service configuration
+    services.cardano-node = {
+      instanceProducers =
+        ifMainnet [ { accessPoints = [
+                        { address = nodes.server-us-east.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-br.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-jp.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-au.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 4;
+                    }
+                  ]
+                  [ { accessPoints = [
+                        { address = nodes.server-us-east.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-br.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-jp.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-au.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = "13.52.93.226";
+                          port = testnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 4;
+                    }
+                  ];
+    };
+  };
+
+  server-us-east = { config, pkgs, ... }: {
+    deployment.targetHost = us-east-2;
+
+    # cardano-node service configuration
+    services.cardano-node = {
+      instanceProducers =
+        ifMainnet [ { accessPoints = [
+                        { address = nodes.server-eu.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-us-west.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-br.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 3;
+                    }
+                  ]
+                  [ { accessPoints = [
+                        { address = nodes.server-eu.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-us-west.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-br.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = "3.142.182.220";
+                          port = 3001;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 4;
+                    }
+                  ];
+    };
+  };
+
+  server-jp = { config, pkgs, ... }: {
+    deployment.targetHost = ap-northeast-1;
+
+    # cardano-node service configuration
+    services.cardano-node = {
+      instanceProducers =
+        ifMainnet [ { accessPoints = [
+                        { address = nodes.server-sg.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-us-west.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-au.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 3;
+                    }
+                  ]
+                  [ { accessPoints = [
+                        { address = nodes.server-sg.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-us-west.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-au.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = "54.238.39.214";
+                          port = testnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 4;
+                    }
+                  ];
+    };
+  };
+
+  server-sg = { config, pkgs, ... }: {
+    deployment.targetHost = ap-southeast-1;
+
+    # cardano-node service configuration
+    services.cardano-node = {
+      instanceProducers =
+        ifMainnet [ { accessPoints = [
+                        { address = nodes.server-sa.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-eu.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-au.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-jp.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 4;
+                    }
+                  ]
+                  [ { accessPoints = [
+                        { address = nodes.server-sa.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-eu.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-au.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-jp.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = "52.74.94.66";
+                          port = testnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 5;
+                    }
+                  ];
+    };
+  };
+
+  server-au = { config, pkgs, ... }: {
+    deployment.targetHost = ap-southeast-2;
+
+    # cardano-node service configuration
+    services.cardano-node = {
+      instanceProducers =
+        ifMainnet [ { accessPoints = [
+                        { address = nodes.server-sg.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-jp.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-us-west.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 3;
+                    }
+                  ]
+                  [ { accessPoints = [
+                        { address = nodes.server-sg.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-jp.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-us-west.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 3;
+                    }
+                  ];
+    };
+  };
+
+  server-br = { config, pkgs, ... }: {
+    deployment.targetHost = sa-east-1;
+
+    # cardano-node service configuration
+    services.cardano-node = {
+      instanceProducers =
+        ifMainnet [ { accessPoints = [
+                        { address = nodes.server-sa.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-us-west.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-us-east.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 3;
+                    }
+                  ]
+                  [ { accessPoints = [
+                        { address = nodes.server-sa.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-us-west.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-us-east.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = "18.229.177.239";
+                          port = testnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 4;
+                    }
+                  ];
+    };
+  };
+
+  server-sa = { config, pkgs, ... }: {
+    deployment.targetHost = af-south-1;
+
+    # cardano-node service configuration
+    services.cardano-node = {
+      instanceProducers =
+        ifMainnet [ { accessPoints = [
+                        { address = nodes.server-sg.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-br.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-eu.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 3;
+                    }
+                  ]
+                  [ { accessPoints = [
+                        { address = nodes.server-sg.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-br.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-eu.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 3;
+                    }
+                  ];
+    };
+  };
+
+  server-eu = { config, pkgs, ... }: {
+    deployment.targetHost = eu-west-3;
+
+    # cardano-node service configuration
+    services.cardano-node = {
+      instanceProducers =
+        ifMainnet [ { accessPoints = [
+                        { address = nodes.server-sa.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-sg.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = nodes.server-us-east.config.deployment.targetHost;
+                          port = mainnet-port;
+                        }
+                        { address = "88.99.169.172";
+                          port = mainnet-port;
+                        }
+                        { address = "95.217.1.58";
+                          port = mainnet-port;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 5;
+                    }
+                  ]
+                  [ { accessPoints = [
+                        { address = nodes.server-sa.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-sg.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        { address = nodes.server-us-east.config.deployment.targetHost;
+                          port = testnet-port;
+                        }
+                        {
+                          address = "88.99.169.172";
+                          port = testnet-port;
+                        }
+                        {
+                          address = "18.169.36.236";
+                          port = 3001;
+                        }
+                      ];
+                      advertise = false;
+                      valency = 5;
+                    }
+                  ];
+    };
+  };
+}
diff --git a/dev-deployer-terraform/main.tf b/dev-deployer-terraform/main.tf
new file mode 100644
index 0000000..2f18c03
--- /dev/null
+++ b/dev-deployer-terraform/main.tf
@@ -0,0 +1,99 @@
+# This will be the provider region where the bucket is going to be created.
+# Note that this region should be the same home_region in the create-amis.sh
+# file.
+#
+# Source for AMIs:
+# https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/virtualisation/amazon-ec2-amis.nix#L445
+provider "aws" {
+  # Configuration options
+  region = "eu-west-1"
+}
+
+variable "nixos-version" { default = "22.05" }
+
+# Assuming the AMIs for older NixOS versions do not change with each new release
+resource "null_resource" "get-amis" {
+  depends_on = []
+  provisioner "local-exec" {
+      command = "wget https://raw.githubusercontent.com/NixOS/nixpkgs/master/nixos/modules/virtualisation/amazon-ec2-amis.nix"
+    }
+}
+
+resource "null_resource" "create-ami-json" {
+  depends_on = [ null_resource.get-amis ]
+  provisioner "local-exec" {
+      command = "nix eval --json -f amazon-ec2-amis.nix | jq > amis.json"
+    }
+}
+
+# Load the AMI information file
+#
+data "local_file" "created-amis" {
+  depends_on = [ null_resource.create-ami-json ]
+  filename = "${path.module}/amis.json"
+}
+
+module "us-west" {
+  source = "./modules/multi-region"
+  ami    = jsondecode(data.local_file.created-amis.content)[var.nixos-version]["${data.aws_region.us-west.name}"]["x86_64-linux"]["hvm-ebs"]
+  providers = {
+    aws = aws.us-west
+  }
+}
+
+module "us-east" {
+  source = "./modules/multi-region"
+  ami    = jsondecode(data.local_file.created-amis.content)[var.nixos-version]["${data.aws_region.us-east.name}"]["x86_64-linux"]["hvm-ebs"]
+  providers = {
+    aws = aws.us-east
+  }
+}
+
+module "jp" {
+  source = "./modules/multi-region"
+  ami    = jsondecode(data.local_file.created-amis.content)[var.nixos-version]["${data.aws_region.jp.name}"]["x86_64-linux"]["hvm-ebs"]
+  providers = {
+    aws = aws.jp
+  }
+}
+
+module "sg" {
+  source = "./modules/multi-region"
+  ami    = jsondecode(data.local_file.created-amis.content)[var.nixos-version]["${data.aws_region.sg.name}"]["x86_64-linux"]["hvm-ebs"]
+  providers = {
+    aws = aws.sg
+  }
+}
+
+module "au" {
+  source = "./modules/multi-region"
+  ami    = jsondecode(data.local_file.created-amis.content)[var.nixos-version]["${data.aws_region.au.name}"]["x86_64-linux"]["hvm-ebs"]
+  providers = {
+    aws = aws.au
+  }
+}
+
+module "br" {
+  source = "./modules/multi-region"
+  ami    = jsondecode(data.local_file.created-amis.content)[var.nixos-version]["${data.aws_region.br.name}"]["x86_64-linux"]["hvm-ebs"]
+  providers = {
+    aws = aws.br
+  }
+}
+
+module "sa" {
+  source = "./modules/multi-region"
+  ami    = jsondecode(data.local_file.created-amis.content)[var.nixos-version]["${data.aws_region.sa.name}"]["x86_64-linux"]["hvm-ebs"]
+  instance_type = "t3.2xlarge"
+  providers = {
+    aws = aws.sa
+  }
+}
+
+module "eu" {
+  source = "./modules/multi-region"
+  ami    = jsondecode(data.local_file.created-amis.content)[var.nixos-version]["${data.aws_region.eu.name}"]["x86_64-linux"]["hvm-ebs"]
+  providers = {
+    aws = aws.eu
+  }
+}
diff --git a/dev-deployer-terraform/modules/multi-region/main.tf b/dev-deployer-terraform/modules/multi-region/main.tf
new file mode 100644
index 0000000..bc6a779
--- /dev/null
+++ b/dev-deployer-terraform/modules/multi-region/main.tf
@@ -0,0 +1,85 @@
+variable "ami" {}
+variable "instance_type" { default = "t3a.2xlarge" }
+
+# If universal access is needed from another machine this is the place to add it.
+#                                        ---v dev-deployer machine
+variable "allowed-to-access" { default = [ "3.124.147.122/32"
+                                         ] }
+
+terraform {
+  required_providers {
+    aws = {
+      source = "hashicorp/aws"
+    }
+  }
+}
+
+resource "aws_security_group" "allow_deployer_sg" {
+  name        = "allow_deployer"
+  #vpc_id      = aws_default_vpc.default.id
+
+  ingress {
+    description = "allow all from deployer"
+    from_port   = 0
+    to_port     = 0
+    protocol    = "-1"
+    cidr_blocks = var.allowed-to-access
+  }
+}
+
+resource "aws_security_group" "allow_all_sg" {
+  name        = "allow_all_sg"
+  #vpc_id      = aws_default_vpc.default.id
+
+  ingress {
+    description = "allow all hosts to access any port greater than 1023 (IPv4)"
+    from_port   = 1024
+    to_port     = 65535
+    protocol    = "tcp"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+
+  ingress {
+    description      = "allow all hosts to access any port greater than 1023 (IPv6)"
+    from_port        = 1024
+    to_port          = 65535
+    protocol         = "tcp"
+    ipv6_cidr_blocks = ["::/0"]
+  }
+
+  egress {
+    description     = ""
+    from_port       = 0
+    to_port         = 0
+    protocol        = "-1"
+    cidr_blocks     = ["0.0.0.0/0"]
+  }
+
+  egress {
+    description      = ""
+    from_port        = 0
+    to_port          = 0
+    protocol         = "-1"
+    ipv6_cidr_blocks = ["::/0"]
+  }
+}
+
+resource "aws_key_pair" "admin_kp" {
+  key_name   = "admin_kp"
+  public_key = "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQC7DmrNylD3NQ0Z1I0i9EqNiPp++gXxgDIrno4jJIR8RBE3oFXjhbY0yJUZt9Tn4uDESQfL0INDO0alWb79OURUL7fKaeXWqbcYolUiCqaxM2bPf8s4giTY0JdG7xaBJq5jSlO34+l1p7DV+tyTHTUYN69jgrc+FMLuQcVDKrXeBKnbyt4YD/hXOuX898D0P554CmM/OMzs0x3DAboqgjmBhoMbdpBqeO6Wmc663SP9D2sTHyOuuUBJFFK9mPNstLMMLJGHsPzzQxsGTp8bwl2yOu9Z3gEp9tC6uvLUHW+P3OCh1vFsLCgYi6L4q/RKAqWni6Oc3i/5i9rF+mJqmBRV7E1zfe9CY9clSSgWgN6vLbhKEIzRvXfzHY+1zUpcziL0aniet0s2yGq5yRhlJWRM9BC/LTcEA8lJJUdEI1C0sI3iEYYKGgKefFhbjTGTNsBk0CzbFKQJqKeMH/wQRBu1sZJwk9khRissDoNGHVWSY9CwS+z/IOfzSDT5eAG5C3M= dev@dev-deployer"
+}
+
+resource "aws_instance" "cad-2694-node" {
+  ami           = var.ami
+  instance_type = var.instance_type
+  key_name      = "admin_kp"
+  ebs_optimized = true
+  root_block_device {
+    volume_size = 90
+    volume_type = "standard"
+  }
+  security_groups = [
+    aws_security_group.allow_deployer_sg.name,
+    aws_security_group.allow_all_sg.name
+  ]
+}
diff --git a/dev-deployer-terraform/providers.tf b/dev-deployer-terraform/providers.tf
new file mode 100644
index 0000000..a3fc18b
--- /dev/null
+++ b/dev-deployer-terraform/providers.tf
@@ -0,0 +1,87 @@
+terraform {
+  required_providers {
+    aws = {
+      source = "hashicorp/aws"
+    }
+  }
+}
+
+provider "aws" {
+  alias  = "us-west"
+  region = "us-west-1"
+}
+
+# Needed to get the region for this particular provider
+data "aws_region" "us-west" {
+  provider = aws.us-west
+}
+
+provider "aws" {
+  alias  = "us-east"
+  region = "us-east-2"
+}
+
+# Needed to get the region for this particular provider
+data "aws_region" "us-east" {
+  provider = aws.us-east
+}
+
+provider "aws" {
+  alias  = "jp"
+  region = "ap-northeast-1"
+}
+
+# Needed to get the region for this particular provider
+data "aws_region" "jp" {
+  provider = aws.jp
+}
+
+provider "aws" {
+  alias  = "sg"
+  region = "ap-southeast-1"
+}
+
+# Needed to get the region for this particular provider
+data "aws_region" "sg" {
+  provider = aws.sg
+}
+
+provider "aws" {
+  alias  = "au"
+  region = "ap-southeast-2"
+}
+
+# Needed to get the region for this particular provider
+data "aws_region" "au" {
+  provider = aws.au
+}
+
+provider "aws" {
+  alias  = "br"
+  region = "sa-east-1"
+}
+
+# Needed to get the region for this particular provider
+data "aws_region" "br" {
+  provider = aws.br
+}
+
+provider "aws" {
+  alias  = "sa"
+  region = "af-south-1"
+}
+
+# Needed to get the region for this particular provider
+data "aws_region" "sa" {
+  provider = aws.sa
+}
+
+provider "aws" {
+  alias  = "eu"
+  region = "eu-west-3"
+}
+
+# Needed to get the region for this particular provider
+data "aws_region" "eu" {
+  provider = aws.eu
+}
diff --git a/nix/sources.json b/nix/sources.json
new file mode 100644
index 0000000..25f1d13
--- /dev/null
+++ b/nix/sources.json
@@ -0,0 +1,38 @@
+{
+    "cardano-node-mainnet": {
+        "branch": "master",
+        "description": "The core component that is used to participate in a Cardano decentralised blockchain.",
+        "homepage": "https://cardano.org",
+        "owner": "input-output-hk",
+        "repo": "cardano-node",
+        "rev": "ca78153653c19f4704fe7ce9a5a32297bf86a211",
+        "sha256": "1rah24gvbnyprlk3liq18vswxn1v1ypk61n2a48kn6w4y196h2jv",
+        "type": "tarball",
+        "url": "https://github.com/input-output-hk/cardano-node/archive/ca78153653c19f4704fe7ce9a5a32297bf86a211.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "cardano-node-testnet": {
+        "branch": "master",
+        "description": "The core component that is used to participate in a Cardano decentralised blockchain.",
+        "homepage": "https://cardano.org",
+        "owner": "input-output-hk",
+        "repo": "cardano-node",
+        "rev": "ca78153653c19f4704fe7ce9a5a32297bf86a211",
+        "sha256": "1rah24gvbnyprlk3liq18vswxn1v1ypk61n2a48kn6w4y196h2jv",
+        "type": "tarball",
+        "url": "https://github.com/input-output-hk/cardano-node/archive/ca78153653c19f4704fe7ce9a5a32297bf86a211.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "nixpkgs": {
+        "branch": "22.05",
+        "description": "Nix Packages collection",
+        "homepage": "",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "ce6aa13369b667ac2542593170993504932eb836",
+        "sha256": "0d643wp3l77hv2pmg2fi7vyxn4rwy0iyr8djcw1h5x72315ck9ik",
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/ce6aa13369b667ac2542593170993504932eb836.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    }
+}
diff --git a/nix/sources.nix b/nix/sources.nix
new file mode 100644
index 0000000..9a01c8a
--- /dev/null
+++ b/nix/sources.nix
@@ -0,0 +1,194 @@
+# This file has been generated by Niv.
+
+let
+
+  #
+  # The fetchers. fetch_<type> fetches specs of type <type>.
+  #
+
+  fetch_file = pkgs: name: spec:
+    let
+      name' = sanitizeName name + "-src";
+    in
+      if spec.builtin or true then
+        builtins_fetchurl { inherit (spec) url sha256; name = name'; }
+      else
+        pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
+
+  fetch_tarball = pkgs: name: spec:
+    let
+      name' = sanitizeName name + "-src";
+    in
+      if spec.builtin or true then
+        builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
+      else
+        pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
+
+  fetch_git = name: spec:
+    let
+      ref =
+        if spec ? ref then spec.ref else
+          if spec ? branch then "refs/heads/${spec.branch}" else
+            if spec ? tag then "refs/tags/${spec.tag}" else
+              abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
+      submodules = if spec ? submodules then spec.submodules else false;
+      submoduleArg =
+        let
+          nixSupportsSubmodules = builtins.compareVersions builtins.nixVersion "2.4" >= 0;
+          emptyArgWithWarning =
+            if submodules == true
+            then
+              builtins.trace
+                (
+                  "The niv input \"${name}\" uses submodules "
+                  + "but your nix's (${builtins.nixVersion}) builtins.fetchGit "
+                  + "does not support them"
+                )
+                {}
+            else {};
+        in
+          if nixSupportsSubmodules
+          then { inherit submodules; }
+          else emptyArgWithWarning;
+    in
+      builtins.fetchGit
+        ({ url = spec.repo; inherit (spec) rev; inherit ref; } // submoduleArg);
+
+  fetch_local = spec: spec.path;
+
+  fetch_builtin-tarball = name: throw
+    ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
+        $ niv modify ${name} -a type=tarball -a builtin=true'';
+
+  fetch_builtin-url = name: throw
+    ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
+        $ niv modify ${name} -a type=file -a builtin=true'';
+
+  #
+  # Various helpers
+  #
+
+  # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
+  sanitizeName = name:
+    (
+      concatMapStrings (s: if builtins.isList s then "-" else s)
+        (
+          builtins.split "[^[:alnum:]+._?=-]+"
+            ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
+        )
+    );
+
+  # The set of packages used when specs are fetched using non-builtins.
+  mkPkgs = sources: system:
+    let
+      sourcesNixpkgs =
+        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
+      hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
+      hasThisAsNixpkgsPath = <nixpkgs> == ./.;
+    in
+      if builtins.hasAttr "nixpkgs" sources
+      then sourcesNixpkgs
+      else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
+        import <nixpkgs> {}
+      else
+        abort
+          ''
+            Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
+            add a package called "nixpkgs" to your sources.json.
+          '';
+
+  # The actual fetching function.
+  fetch = pkgs: name: spec:
+
+    if ! builtins.hasAttr "type" spec then
+      abort "ERROR: niv spec ${name} does not have a 'type' attribute"
+    else if spec.type == "file" then fetch_file pkgs name spec
+    else if spec.type == "tarball" then fetch_tarball pkgs name spec
+    else if spec.type == "git" then fetch_git name spec
+    else if spec.type == "local" then fetch_local spec
+    else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
+    else if spec.type == "builtin-url" then fetch_builtin-url name
+    else
+      abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
+
+  # If the environment variable NIV_OVERRIDE_${name} is set, then use
+  # the path directly as opposed to the fetched source.
+  replace = name: drv:
+    let
+      saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
+      ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
+    in
+      if ersatz == "" then drv else
+        # this turns the string into an actual Nix path (for both absolute and
+        # relative paths)
+        if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
+
+  # Ports of functions for older nix versions
+
+  # a Nix version of mapAttrs if the built-in doesn't exist
+  mapAttrs = builtins.mapAttrs or (
+    f: set: with builtins;
+    listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
+  );
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
+  range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1);
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
+  stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
+  stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
+  concatMapStrings = f: list: concatStrings (map f list);
+  concatStrings = builtins.concatStringsSep "";
+
+  # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
+  optionalAttrs = cond: as: if cond then as else {};
+
+  # fetchTarball version that is compatible between all the versions of Nix
+  builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
+    let
+      inherit (builtins) lessThan nixVersion fetchTarball;
+    in
+      if lessThan nixVersion "1.12" then
+        fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
+      else
+        fetchTarball attrs;
+
+  # fetchurl version that is compatible between all the versions of Nix
+  builtins_fetchurl = { url, name ? null, sha256 }@attrs:
+    let
+      inherit (builtins) lessThan nixVersion fetchurl;
+    in
+      if lessThan nixVersion "1.12" then
+        fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
+      else
+        fetchurl attrs;
+
+  # Create the final "sources" from the config
+  mkSources = config:
+    mapAttrs (
+      name: spec:
+        if builtins.hasAttr "outPath" spec
+        then abort
+          "The values in sources.json should not have an 'outPath' attribute"
+        else
+          spec // { outPath = replace name (fetch config.pkgs name spec); }
+    ) config.sources;
+
+  # The "config" used by the fetchers
+  mkConfig =
+    { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
+    , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)
+    , system ? builtins.currentSystem
+    , pkgs ? mkPkgs sources system
+    }: rec {
+      # The sources, i.e. the attribute set of spec name to spec
+      inherit sources;
+
+      # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
+      inherit pkgs;
+    };
+
+in
+mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..c1c2966
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,15 @@
+# import pinned niv sources
+let sources = import ./nix/sources.nix;
+    pkgs    = import sources.nixpkgs { };
+
+in pkgs.mkShell {
+  # nativeBuildInputs is usually what you want -- tools you need to run
+  nativeBuildInputs = [ pkgs.awscli2
+                        pkgs.terraform
+                        pkgs.ec2-api-tools
+                        pkgs.ec2-ami-tools
+                        pkgs.nixops
+                        pkgs.nix
+                        pkgs.wget
+                      ];
+                }