diff --git a/Terraform/variables.tf b/Terraform/variables.tf
new file mode 100644
index 0000000..ac5260e
--- /dev/null
+++ b/Terraform/variables.tf
@@ -0,0 +1,85 @@
+variable "region" {
+  default = "us-west-1"
+}
+variable "shared_credentials_file" {
+  description = "Path to your AWS credentials file"
+  type = "string"
+  default = "/home/username/.aws/credentials"
+}
+ variable "public_key_name" {
+   description = "A name for AWS Keypair to use to auth to logger. Can be anything you specify."
+   default = "id_logger"
+ }
+variable "public_key_path" {
+  description = "Path to the public key to be loaded into the logger authorized_keys file"
+  type = "string"
+  default = "/home/username/.ssh/id_logger.pub"
+}
+variable "private_key_path" {
+  description = "Path to the private key to use to authenticate to logger."
+  type = "string"
+  default = "/home/username/.ssh/id_logger"
+}
+variable "ip_whitelist" {
+  description = "A list of CIDRs that will be allowed to access the EC2 instances"
+  type = "list"
+  default = [""]
+}
+
+# The logger host will provision itself and does not use a pre-built AMI
+
+# Use Data Sources to resolve the AMI-ID for the pre-built DC host
+data "aws_ami" "dc_ami" {
+  owners = ["505638924199"]
+  filter {
+    name = "tag:Name"
+    values = ["dc"]
+  }
+  filter {
+    name = "image-id"
+    values = ["${var.dc_ami}"]
+  }
+}
+
+# Use Data Sources to resolve the AMI-ID for the pre-built WEF host
+data "aws_ami" "wef_ami" {
+  owners = ["505638924199"]
+  most_recent = true
+  filter {
+    name = "tag:Name"
+    values = ["wef"]
+  }
+  filter {
+    name = "image-id"
+    values = ["${var.wef_ami}"]
+  }
+}
+
+# Use Data Sources to resolve the AMI-ID for the pre-built Win10 host
+data "aws_ami" "win10_ami" {
+  owners = ["505638924199"]
+  most_recent = true
+  filter {
+    name = "tag:Name"
+    values = ["win10"]
+  }
+  filter {
+    name = "image-id"
+    values = ["${var.win10_ami}"]
+  }
+}
+
+# If you are building your own AMIs, replace the default values below with
+# the AMI IDs
+variable "logger_ami" {
+  default = "*"
+}
+variable "dc_ami" {
+  default = "*"
+}
+variable "wef_ami" {
+  default = "*"
+}
+variable "win10_ami" {
+  default = "*"
+}