diff --git a/.tool-versions b/.tool-versions
index b5b08159..13b6acde 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,11 +1,9 @@
-# This file is for you! Please, updated to the versions agreed by your team.
-
-terraform 1.9.1
-pre-commit 3.6.0
-nodejs 18.18.2
+act 0.2.64
 gitleaks 8.18.4
-vale 3.6.0
+pre-commit 3.6.0
+terraform 1.9.2
 tfsec 1.28.10
+vale 3.6.0
 
 # ==============================================================================
 # The section below is reserved for Docker image versions.
diff --git a/infrastructure/environments/dev/.gitkeep b/infrastructure/environments/dev/.gitkeep
deleted file mode 100644
index e69de29b..00000000
diff --git a/infrastructure/terraform/bin/terraform.sh b/infrastructure/terraform/bin/terraform.sh
index 22143d1a..756b4ef8 100755
--- a/infrastructure/terraform/bin/terraform.sh
+++ b/infrastructure/terraform/bin/terraform.sh
@@ -8,7 +8,7 @@
 ##
 # Set Script Version
 ##
-readonly script_ver="1.8.0";
+readonly script_ver="1.8.1";
 
 ##
 # Standardised failure function
@@ -399,13 +399,16 @@ fi;
 pushd "${component_path}";
 readonly component_name=$(basename ${component_path});
 
-# Check for presence of tfenv (https://github.com/kamatama41/tfenv)
-# and a .terraform-version file. If both present, ensure required
-# version of terraform for this component is installed automagically.
-tfenv_bin="$(which tfenv 2>/dev/null)";
-if [[ -n "${tfenv_bin}" && -x "${tfenv_bin}" && -f .terraform-version ]]; then
-  ${tfenv_bin} install;
-fi;
+# install terraform
+# verify terraform version matches .tool-versions
+echo ${PWD}
+tool_version=$(grep "terraform " .tool-versions | cut -d ' ' -f 2)
+asdf plugin-add terraform && asdf install terraform "${tool_version}"
+current_version=$(terraform --version | head -n 1 | cut -d 'v' -f 2)
+
+if [ -z "${current_version}" ] || [ "${current_version}" != "${tool_version}" ]; then
+  error_and_die "Terraform version mismatch. Expected: ${tool_version}, Actual: ${current_version}"
+fi
 
 # Regardless of bootstrapping or not, we'll be using this string.
 # If bootstrapping, we will fill it with variables,
diff --git a/infrastructure/terraform/bootstrap/.terraform-version b/infrastructure/terraform/bootstrap/.terraform-version
deleted file mode 100644
index 80e78df6..00000000
--- a/infrastructure/terraform/bootstrap/.terraform-version
+++ /dev/null
@@ -1 +0,0 @@
-1.3.5
diff --git a/infrastructure/terraform/bootstrap/data_iam_policy_document_bucket.tf b/infrastructure/terraform/bootstrap/data_iam_policy_document_bucket.tf
deleted file mode 100644
index dd231f57..00000000
--- a/infrastructure/terraform/bootstrap/data_iam_policy_document_bucket.tf
+++ /dev/null
@@ -1,68 +0,0 @@
-data "aws_iam_policy_document" "bucket" {
-  statement {
-    sid    = "DontAllowNonSecureConnection"
-    effect = "Deny"
-
-    actions = [
-      "s3:*",
-    ]
-
-    resources = [
-      aws_s3_bucket.bucket.arn,
-      "${aws_s3_bucket.bucket.arn}/*",
-    ]
-
-    principals {
-      type = "AWS"
-
-      identifiers = [
-        "*",
-      ]
-    }
-
-    condition {
-      test     = "Bool"
-      variable = "aws:SecureTransport"
-
-      values = [
-        "false",
-      ]
-    }
-  }
-
-  statement {
-    sid    = "AllowManagedAccountsToList"
-    effect = "Allow"
-
-    actions = [
-      "s3:ListBucket",
-    ]
-
-    resources = [
-      aws_s3_bucket.bucket.arn,
-    ]
-
-    principals {
-      type        = "AWS"
-      identifiers = local.ro_principals
-    }
-  }
-
-  statement {
-    sid    = "AllowManagedAccountsToGet"
-    effect = "Allow"
-
-    actions = [
-      "s3:GetObject",
-    ]
-
-    resources = [
-      "${aws_s3_bucket.bucket.arn}/*",
-    ]
-
-    principals {
-      type        = "AWS"
-      identifiers = local.ro_principals
-    }
-  }
-}
diff --git a/infrastructure/terraform/bootstrap/data_iam_policy_document_kms_key_s3.tf b/infrastructure/terraform/bootstrap/data_iam_policy_document_kms_key_s3.tf
deleted file mode 100644
index 9741a087..00000000
--- a/infrastructure/terraform/bootstrap/data_iam_policy_document_kms_key_s3.tf
+++ /dev/null
@@ -1,46 +0,0 @@
-data "aws_iam_policy_document" "kms_key_s3" {
-  statement {
-    sid    = "AllowLocalIAMAdministration"
-    effect = "Allow"
-
-    actions = [
-      "*",
-    ]
-
-    resources = [
-      "*",
-    ]
-
-    principals {
-      type = "AWS"
-      identifiers = [
-        "arn:aws:iam::${var.aws_account_id}:root",
-      ]
-    }
-  }
-
-  statement {
-    sid    = "AllowManagedAccountsToUse"
-    effect = "Allow"
-
-    actions = [
-      "kms:Decrypt",
-      "kms:DescribeKey",
-      "kms:Encrypt",
-      "kms:GenerateDataKey",
-      "kms:GenerateDataKeyPair",
-      "kms:GenerateDataKeyPairWithoutPlaintext",
-      "kms:GenerateDataKeyWithoutPlaintext",
-      "kms:ReEncrypt",
-    ]
-
-    resources = [
-      "*",
-    ]
-
-    principals {
-      type        = "AWS"
-      identifiers = local.ro_principals
-    }
-  }
-}
diff --git a/infrastructure/terraform/bootstrap/dynamodb_table.tf b/infrastructure/terraform/bootstrap/dynamodb_table.tf
deleted file mode 100644
index a5510f84..00000000
--- a/infrastructure/terraform/bootstrap/dynamodb_table.tf
+++ /dev/null
@@ -1,26 +0,0 @@
-resource "aws_dynamodb_table" "tfscaffold" {
-  name         = var.bucket_name
-  hash_key     = "LockID"
-  billing_mode = "PAY_PER_REQUEST"
-
-  attribute {
-    name = "LockID"
-    type = "S"
-  }
-
-  point_in_time_recovery {
-    enabled = true
-  }
-
-  server_side_encryption {
-    enabled     = true
-    kms_key_arn = aws_kms_key.s3.arn
-  }
-
-  tags = merge(
-    local.default_tags,
-    {
-      Name = var.bucket_name
-    },
-  )
-}
diff --git a/infrastructure/terraform/bootstrap/kms_key_s3.tf b/infrastructure/terraform/bootstrap/kms_key_s3.tf
deleted file mode 100644
index d8a9ff42..00000000
--- a/infrastructure/terraform/bootstrap/kms_key_s3.tf
+++ /dev/null
@@ -1,16 +0,0 @@
-resource "aws_kms_key" "s3" {
-  description             = "tfscaffold Bootstrap S3 Bucket"
-  deletion_window_in_days = 10
-  enable_key_rotation     = true
-
-  policy = data.aws_iam_policy_document.kms_key_s3.json
-
-  # This does not use default tag map merging because bootstrapping is special
-  # You should use default tag map merging elsewhere
-  tags = merge(
-    local.default_tags,
-    {
-      Name = "tfscaffold Bootstrap S3 Bucket"
-    }
-  )
-}
diff --git a/infrastructure/terraform/bootstrap/locals.tf b/infrastructure/terraform/bootstrap/locals.tf
deleted file mode 100644
index 1449f889..00000000
--- a/infrastructure/terraform/bootstrap/locals.tf
+++ /dev/null
@@ -1,13 +0,0 @@
-locals {
-  ro_principals = compact(distinct(flatten([
-    var.tfscaffold_ro_principals,
-    "arn:aws:iam::${var.aws_account_id}:root",
-  ])))
-
-  default_tags = {
-    "tfscaffold:Environment" = var.environment
-    "tfscaffold:Project"     = var.project
-    "tfscaffold:Component"   = var.component
-    "tfscaffold:Account"     = var.aws_account_id
-  }
-}
diff --git a/infrastructure/terraform/bootstrap/outputs.tf b/infrastructure/terraform/bootstrap/outputs.tf
deleted file mode 100644
index 05b4902c..00000000
--- a/infrastructure/terraform/bootstrap/outputs.tf
+++ /dev/null
@@ -1,23 +0,0 @@
-output "bucket_name" {
-  value = aws_s3_bucket.bucket.id
-}
-
-output "bucket_policy" {
-  value = data.aws_iam_policy_document.bucket.json
-}
-
-output "bucket_arn" {
-  value = aws_s3_bucket.bucket.arn
-}
-
-output "kms_key_arn" {
-  value = aws_kms_key.s3.arn
-}
-
-output "kms_key_id" {
-  value = aws_kms_key.s3.id
-}
-
-output "kms_key_policy" {
-  value = data.aws_iam_policy_document.kms_key_s3.json
-}
diff --git a/infrastructure/terraform/bootstrap/provider_aws.tf b/infrastructure/terraform/bootstrap/provider_aws.tf
deleted file mode 100644
index 02a88588..00000000
--- a/infrastructure/terraform/bootstrap/provider_aws.tf
+++ /dev/null
@@ -1,12 +0,0 @@
-# The default AWS provider in the default region
-provider "aws" {
-  region = var.region
-
-  # For no reason other than redundant safety
-  # we only allow the use of the AWS Account
-  # specified in the environment variables.
-  # This helps to prevent accidents.
-  allowed_account_ids = [
-    var.aws_account_id,
-  ]
-}
diff --git a/infrastructure/terraform/bootstrap/s3_bucket.tf b/infrastructure/terraform/bootstrap/s3_bucket.tf
deleted file mode 100644
index 5d5e092f..00000000
--- a/infrastructure/terraform/bootstrap/s3_bucket.tf
+++ /dev/null
@@ -1,14 +0,0 @@
-resource "aws_s3_bucket" "bucket" {
-  bucket = var.bucket_name
-
-  force_destroy = false
-
-  # This does not use default tag map merging because bootstrapping is special
-  # You should use default tag map merging elsewhere
-  tags = merge(
-    local.default_tags,
-    {
-      Name = "Terraform Scaffold State File Bucket for account ${var.aws_account_id} in region ${var.region}"
-    }
-  )
-}
diff --git a/infrastructure/terraform/bootstrap/s3_bucket_lifecycle_configuration.tf b/infrastructure/terraform/bootstrap/s3_bucket_lifecycle_configuration.tf
deleted file mode 100644
index 4e173b67..00000000
--- a/infrastructure/terraform/bootstrap/s3_bucket_lifecycle_configuration.tf
+++ /dev/null
@@ -1,26 +0,0 @@
-resource "aws_s3_bucket_lifecycle_configuration" "bucket" {
-  bucket = aws_s3_bucket.bucket.id
-
-  rule {
-    id     = "bootstrap"
-    status = "Enabled"
-
-    filter {
-      prefix = ""
-    }
-
-    noncurrent_version_transition {
-      noncurrent_days = "30"
-      storage_class   = "STANDARD_IA"
-    }
-
-    noncurrent_version_transition {
-      noncurrent_days = "60"
-      storage_class   = "GLACIER"
-    }
-
-    noncurrent_version_expiration {
-      noncurrent_days = "90"
-    }
-  }
-}
diff --git a/infrastructure/terraform/bootstrap/s3_bucket_ownership_controls.tf b/infrastructure/terraform/bootstrap/s3_bucket_ownership_controls.tf
deleted file mode 100644
index fc4a359c..00000000
--- a/infrastructure/terraform/bootstrap/s3_bucket_ownership_controls.tf
+++ /dev/null
@@ -1,7 +0,0 @@
-resource "aws_s3_bucket_ownership_controls" "bucket" {
-  bucket = aws_s3_bucket.bucket.id
-
-  rule {
-    object_ownership = "BucketOwnerEnforced"
-  }
-}
diff --git a/infrastructure/terraform/bootstrap/s3_bucket_policy.tf b/infrastructure/terraform/bootstrap/s3_bucket_policy.tf
deleted file mode 100644
index d12922ac..00000000
--- a/infrastructure/terraform/bootstrap/s3_bucket_policy.tf
+++ /dev/null
@@ -1,8 +0,0 @@
-resource "aws_s3_bucket_policy" "bucket" {
-  bucket = aws_s3_bucket.bucket.id
-  policy = data.aws_iam_policy_document.bucket.json
-
-  depends_on = [
-    aws_s3_bucket_public_access_block.bucket,
-  ]
-}
diff --git a/infrastructure/terraform/bootstrap/s3_bucket_public_access_block.tf b/infrastructure/terraform/bootstrap/s3_bucket_public_access_block.tf
deleted file mode 100644
index d134b312..00000000
--- a/infrastructure/terraform/bootstrap/s3_bucket_public_access_block.tf
+++ /dev/null
@@ -1,8 +0,0 @@
-resource "aws_s3_bucket_public_access_block" "bucket" {
-  bucket = aws_s3_bucket.bucket.id
-
-  block_public_acls       = true
-  block_public_policy     = true
-  ignore_public_acls      = true
-  restrict_public_buckets = true
-}
diff --git a/infrastructure/terraform/bootstrap/s3_bucket_server_side_encryption_configuration.tf b/infrastructure/terraform/bootstrap/s3_bucket_server_side_encryption_configuration.tf
deleted file mode 100644
index 5733d983..00000000
--- a/infrastructure/terraform/bootstrap/s3_bucket_server_side_encryption_configuration.tf
+++ /dev/null
@@ -1,12 +0,0 @@
-resource "aws_s3_bucket_server_side_encryption_configuration" "bucket" {
-  bucket = aws_s3_bucket.bucket.id
-
-  rule {
-    apply_server_side_encryption_by_default {
-      kms_master_key_id = aws_kms_key.s3.arn
-      sse_algorithm     = "aws:kms"
-    }
-
-    bucket_key_enabled = true
-  }
-}
diff --git a/infrastructure/terraform/bootstrap/s3_bucket_versioning.tf b/infrastructure/terraform/bootstrap/s3_bucket_versioning.tf
deleted file mode 100644
index 80c1ab95..00000000
--- a/infrastructure/terraform/bootstrap/s3_bucket_versioning.tf
+++ /dev/null
@@ -1,7 +0,0 @@
-resource "aws_s3_bucket_versioning" "bucket" {
-  bucket = aws_s3_bucket.bucket.id
-
-  versioning_configuration {
-    status = "Enabled"
-  }
-}
diff --git a/infrastructure/terraform/bootstrap/variables.tf b/infrastructure/terraform/bootstrap/variables.tf
deleted file mode 100644
index d7b1f44b..00000000
--- a/infrastructure/terraform/bootstrap/variables.tf
+++ /dev/null
@@ -1,37 +0,0 @@
-variable "project" {
-  type        = string
-  description = "The name of the Project we are bootstrapping tfscaffold for"
-}
-
-variable "aws_account_id" {
-  type        = string
-  description = "The AWS Account ID into which we are bootstrapping tfscaffold"
-}
-
-variable "region" {
-  type        = string
-  description = "The AWS Region into which we are bootstrapping tfscaffold"
-}
-
-variable "environment" {
-  type        = string
-  description = "The name of the environment for the bootstrapping process; which is always bootstrap"
-  default     = "bootstrap"
-}
-
-variable "component" {
-  type        = string
-  description = "The name of the component for the bootstrapping process; which is always bootstrap"
-  default     = "bootstrap"
-}
-
-variable "bucket_name" {
-  type        = string
-  description = "The name to use for the tfscaffold bucket. This should be provided from tfscaffold shell, not environment or group tfvars"
-}
-
-variable "tfscaffold_ro_principals" {
-  type        = list(string)
-  description = "A list of Principals permitted to ListBucket and GetObject for Remote State purposes. Normally the root principal of the account"
-  default     = []
-}
diff --git a/infrastructure/terraform/bootstrap/versions.tf b/infrastructure/terraform/bootstrap/versions.tf
deleted file mode 100644
index 87dc6a9d..00000000
--- a/infrastructure/terraform/bootstrap/versions.tf
+++ /dev/null
@@ -1,10 +0,0 @@
-terraform {
-  required_providers {
-    aws = {
-      source  = "hashicorp/aws"
-      version = "~> 4.61.0"
-    }
-  }
-
-  required_version = ">= 0.14.7"
-}
diff --git a/infrastructure/terraform/components/acct/.terraform-version b/infrastructure/terraform/components/acct/.terraform-version
deleted file mode 100644
index 631f7908..00000000
--- a/infrastructure/terraform/components/acct/.terraform-version
+++ /dev/null
@@ -1 +0,0 @@
-latest:^1\.8\.
diff --git a/infrastructure/terraform/components/acct/.tool-versions b/infrastructure/terraform/components/acct/.tool-versions
new file mode 100644
index 00000000..3874604d
--- /dev/null
+++ b/infrastructure/terraform/components/acct/.tool-versions
@@ -0,0 +1 @@
+terraform 1.9.2
diff --git a/infrastructure/terraform/components/acct/README b/infrastructure/terraform/components/acct/README
deleted file mode 100644
index d2148877..00000000
--- a/infrastructure/terraform/components/acct/README
+++ /dev/null
@@ -1,5 +0,0 @@
-README for 'acct' component - Account-level resources
-
-This component is intended to be run to set up things (such as a DNS subdomain) at the account level, and this should be run for each account belonging to the Notify Domain - i.e. there should be a nonprod and prod environment .tfvars
-
-Copy the `env_eu-west-2_example.tfvars` file in the `etc` directory and adjust as needed for nonprod and prod for your NHS Notify Domain.
diff --git a/infrastructure/terraform/components/acct/cloudwatch_log_group_route53_query_log.tf b/infrastructure/terraform/components/acct/cloudwatch_log_group_route53_query_log.tf
new file mode 100644
index 00000000..e30e2087
--- /dev/null
+++ b/infrastructure/terraform/components/acct/cloudwatch_log_group_route53_query_log.tf
@@ -0,0 +1,37 @@
+resource "aws_cloudwatch_log_group" "aws_route53_query_log" {
+  provider = aws.us-east-1 # Route53 query logging must be in us-east-1 https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_query_log
+
+  name              = "/aws/route53/${local.csi}"
+  retention_in_days = var.log_retention_in_days
+}
+
+resource "aws_cloudwatch_log_resource_policy" "route53_query_logging_policy" {
+  provider = aws.us-east-1 # Route53 query logging must be in us-east-1 https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/route53_query_log
+
+  policy_document = data.aws_iam_policy_document.route53_logs.json
+  policy_name     = "${local.csi}-route53-query-logging-policy"
+}
+
+data "aws_iam_policy_document" "route53_logs" {
+  statement {
+    effect = "Allow"
+
+    principals {
+      type = "Service"
+
+      identifiers = [
+        "route53.amazonaws.com"
+      ]
+    }
+
+    actions = [
+      "logs:CreateLogStream",
+      "logs:PutLogEvents",
+    ]
+
+    resources = [
+      aws_cloudwatch_log_group.aws_route53_query_log.arn,
+      "${aws_cloudwatch_log_group.aws_route53_query_log.arn}:*"
+    ]
+  }
+}
diff --git a/infrastructure/terraform/components/acct/locals_tfscaffold.tf b/infrastructure/terraform/components/acct/locals_tfscaffold.tf
index e5084cdf..b7cf3217 100644
--- a/infrastructure/terraform/components/acct/locals_tfscaffold.tf
+++ b/infrastructure/terraform/components/acct/locals_tfscaffold.tf
@@ -34,12 +34,11 @@ locals {
   default_tags = merge(
     var.default_tags,
     {
-      Project         = var.project
-      Environment     = var.environment
-      Component       = var.component
-      Group           = var.group
-      NHSNotifyDomain = var.nhs_notify_domain
-      Name            = local.csi
+      Project     = var.project
+      Environment = var.environment
+      Component   = var.component
+      Group       = var.group
+      Name        = local.csi
     },
   )
 }
diff --git a/infrastructure/terraform/components/acct/outputs.tf b/infrastructure/terraform/components/acct/outputs.tf
index 5bc34180..58f3fefd 100644
--- a/infrastructure/terraform/components/acct/outputs.tf
+++ b/infrastructure/terraform/components/acct/outputs.tf
@@ -1,19 +1,7 @@
-output "aws_account_id" {
-  value = var.aws_account_id
-}
-
-output "r53_delegation_set_id" {
-  value = aws_route53_delegation_set.main.id
-}
-
-output "r53_delegation_set_nameservers" {
-  value = aws_route53_delegation_set.main.name_servers
-}
-
-output "r53_subdomain_name" {
-  value = var.subdomain_name
-}
-
-output "r53_subdomain_id" {
-  value = one(aws_route53_zone.subdomain[*].id)
+output "dns_zone" {
+  value = {
+    id          = aws_route53_zone.main.id
+    name        = aws_route53_zone.main.name
+    nameservers = aws_route53_zone.main.name_servers
+  }
 }
diff --git a/infrastructure/terraform/components/acct/provider_aws.tf b/infrastructure/terraform/components/acct/provider_aws.tf
index a8058431..d694811e 100644
--- a/infrastructure/terraform/components/acct/provider_aws.tf
+++ b/infrastructure/terraform/components/acct/provider_aws.tf
@@ -6,13 +6,19 @@ provider "aws" {
   ]
 
   default_tags {
-    tags = {
-      Project         = var.project
-      Environment     = var.environment
-      Component       = var.component
-      Group           = var.group
-      NHSNotifyDomain = var.nhs_notify_domain
-      Name            = local.csi
-    }
+    tags = local.default_tags
   }
 }
+
+provider "aws" {
+  alias  = "us-east-1"
+  region = "us-east-1"
+
+  default_tags {
+    tags = local.default_tags
+  }
+
+  allowed_account_ids = [
+    var.aws_account_id,
+  ]
+}
diff --git a/infrastructure/terraform/components/acct/route53_delegation_set.tf b/infrastructure/terraform/components/acct/route53_delegation_set.tf
new file mode 100644
index 00000000..d3d0896b
--- /dev/null
+++ b/infrastructure/terraform/components/acct/route53_delegation_set.tf
@@ -0,0 +1,3 @@
+resource "aws_route53_delegation_set" "main" {
+  reference_name = "unset.${var.root_domain_name}"
+}
diff --git a/infrastructure/terraform/components/acct/route53_delegation_set_main.tf b/infrastructure/terraform/components/acct/route53_delegation_set_main.tf
deleted file mode 100644
index 76ad88e0..00000000
--- a/infrastructure/terraform/components/acct/route53_delegation_set_main.tf
+++ /dev/null
@@ -1,3 +0,0 @@
-resource "aws_route53_delegation_set" "main" {
-  reference_name = "main"
-}
diff --git a/infrastructure/terraform/components/acct/route53_query_log.tf b/infrastructure/terraform/components/acct/route53_query_log.tf
new file mode 100644
index 00000000..305ebb44
--- /dev/null
+++ b/infrastructure/terraform/components/acct/route53_query_log.tf
@@ -0,0 +1,9 @@
+resource "aws_route53_query_log" "main" {
+  zone_id = aws_route53_zone.main.zone_id
+
+  cloudwatch_log_group_arn = aws_cloudwatch_log_group.aws_route53_query_log.arn
+
+  depends_on = [
+    aws_cloudwatch_log_resource_policy.route53_query_logging_policy
+  ]
+}
diff --git a/infrastructure/terraform/components/acct/route53_zone.tf b/infrastructure/terraform/components/acct/route53_zone.tf
new file mode 100644
index 00000000..cfd7be29
--- /dev/null
+++ b/infrastructure/terraform/components/acct/route53_zone.tf
@@ -0,0 +1,5 @@
+resource "aws_route53_zone" "main" {
+  name = "unset.${var.root_domain_name}"
+
+  delegation_set_id = aws_route53_delegation_set.main.id
+}
diff --git a/infrastructure/terraform/components/acct/route53_zone_subdomain.tf b/infrastructure/terraform/components/acct/route53_zone_subdomain.tf
deleted file mode 100644
index cc52061b..00000000
--- a/infrastructure/terraform/components/acct/route53_zone_subdomain.tf
+++ /dev/null
@@ -1,7 +0,0 @@
-resource "aws_route53_zone" "subdomain" {
-  count = var.subdomain_name != "" ? 1 : 0
-
-  name = var.subdomain_name
-
-  delegation_set_id = aws_route53_delegation_set.main.id
-}
diff --git a/infrastructure/terraform/components/acct/variables.tf b/infrastructure/terraform/components/acct/variables.tf
index f625501d..14cf64df 100644
--- a/infrastructure/terraform/components/acct/variables.tf
+++ b/infrastructure/terraform/components/acct/variables.tf
@@ -41,24 +41,24 @@ variable "component" {
   default     = "acct"
 }
 
-variable "nhs_notify_domain" {
-  type        = string
-  description = "The name of the NHS Notify Domain that this is deploying to"
-}
-
 variable "default_tags" {
   type        = map(string)
   description = "A map of default tags to apply to all taggable resources within the component"
   default     = {}
 }
 
-
 ##
-# Variables specific to the "acct" component
+# Variables specific to the "dnsroot"component
 ##
 
-variable "subdomain_name" {
+variable "log_retention_in_days" {
+  type        = number
+  description = "The retention period in days for the Cloudwatch Logs events to be retained, default of 0 is indefinite"
+  default     = 0
+}
+
+variable "root_domain_name" {
   type        = string
-  description = "The subdomain name to create a Route53 zone for"
-  default     = ""
+  description = "The service's root DNS root nameespace, like nonprod.nhsnotify.national.nhs.uk"
+  default     = "nonprod.nhsnotify.national.nhs.uk"
 }
diff --git a/infrastructure/terraform/components/acct/versions.tf b/infrastructure/terraform/components/acct/versions.tf
index ee15bad7..5fba18d2 100644
--- a/infrastructure/terraform/components/acct/versions.tf
+++ b/infrastructure/terraform/components/acct/versions.tf
@@ -6,5 +6,5 @@ terraform {
     }
   }
 
-  required_version = "~> 1.8.4"
+  required_version = ">= 1.9.0"
 }
diff --git a/infrastructure/terraform/components/examplecomponent/.tool-versions b/infrastructure/terraform/components/examplecomponent/.tool-versions
new file mode 100644
index 00000000..3874604d
--- /dev/null
+++ b/infrastructure/terraform/components/examplecomponent/.tool-versions
@@ -0,0 +1 @@
+terraform 1.9.2
diff --git a/scripts/terraform/terraform.lib.sh b/scripts/terraform/terraform.lib.sh
index 7793b9b0..d94213e8 100644
--- a/scripts/terraform/terraform.lib.sh
+++ b/scripts/terraform/terraform.lib.sh
@@ -53,8 +53,12 @@ function terraform-destroy() {
 #   dir=[path to a directory where the command will be executed, relative to the project's top-level directory, default is '.']
 #   opts=[options to pass to the Terraform fmt command, default is '-recursive']
 function terraform-fmt() {
+  for d in "${PWD}infrastructure/"*; do
+    if [ -d "$d" ]; then
+        terraform fmt --recursive "${d}"
+    fi
+  done
 
-  _terraform fmt -recursive # 'dir' and 'opts' are passed to the function as environment variables, if set
 }
 
 # Validate Terraform code.
diff --git a/scripts/terraform/terraform.mk b/scripts/terraform/terraform.mk
index 111acda9..4a2783a1 100644
--- a/scripts/terraform/terraform.mk
+++ b/scripts/terraform/terraform.mk
@@ -4,11 +4,6 @@
 # Custom implementation - implementation of a make target should not exceed 5 lines of effective code.
 # In most cases there should be no need to modify the existing make targets.
 
-TF_ENV ?= dev
-STACK ?= ${stack}
-TERRAFORM_STACK ?= $(or ${STACK}, infrastructure/environments/${TF_ENV})
-dir ?= ${TERRAFORM_STACK}
-
 terraform-init: # Initialise Terraform - optional: terraform_dir|dir=[path to a directory where the command will be executed, relative to the project's top-level directory, default is one of the module variables or the example directory, if not set], terraform_opts|opts=[options to pass to the Terraform init command, default is none/empty] @Development
 	make _terraform cmd="init" \
 		dir=$(or ${terraform_dir}, ${dir}) \
@@ -46,9 +41,11 @@ clean:: # Remove Terraform files (terraform) - optional: terraform_dir|dir=[path
 		opts=$(or ${terraform_opts}, ${opts})
 
 _terraform: # Terraform command wrapper - mandatory: cmd=[command to execute]; optional: dir=[path to a directory where the command will be executed, relative to the project's top-level directory, default is one of the module variables or the example directory, if not set], opts=[options to pass to the Terraform command, default is none/empty]
+	# 'TERRAFORM_STACK' is passed to the functions as environment variable
+	TERRAFORM_STACK=$(or ${TERRAFORM_STACK}, $(or ${terraform_stack}, $(or ${STACK}, ${stack})))
 	dir=$(or ${dir}, ${TERRAFORM_STACK})
-	. scripts/terraform/terraform.lib.sh && \
-		terraform-${cmd} # 'dir' and 'opts' are accessible by the function as environment variables, if set
+	. "scripts/terraform/terraform.lib.sh"; \
+	terraform-${cmd} # 'dir' and 'opts' are accessible by the function as environment variables, if set
 
 # ==============================================================================
 # Quality checks - please DO NOT edit this section!
@@ -58,6 +55,31 @@ terraform-shellscript-lint: # Lint all Terraform module shell scripts @Quality
 		file=$${file} scripts/shellscript-linter.sh
 	done
 
+terraform-sec: # TFSEC check against Terraform files - optional: terraform_dir|dir=[path to a directory where the command will be executed, relative to the project's top-level directory, default is one of the module variables or the example directory, if not set], terraform_opts|opts=[options to pass to the Terraform fmt command, default is '-recursive'] @Quality
+	tfsec infrastructure/terraform \
+		--force-all-dirs \
+		--exclude-downloaded-modules \
+		--tfvars-file infrastructure/terraform/etc/global.tfvars \
+		--tfvars-file infrastructure/terraform/etc/env_eu-west-2_main.tfvars \
+		--config-file scripts/config/tfsec.yml
+
+# ==============================================================================
+# Module tests and examples - please DO NOT edit this section!
+
+terraform-example-provision-aws-infrastructure: # Provision example of AWS infrastructure @ExamplesAndTests
+	make terraform-init
+	make terraform-plan opts="-out=terraform.tfplan"
+	make terraform-apply opts="-auto-approve terraform.tfplan"
+
+terraform-example-destroy-aws-infrastructure: # Destroy example of AWS infrastructure @ExamplesAndTests
+	make terraform-destroy opts="-auto-approve"
+
+terraform-example-clean: # Remove Terraform example files @ExamplesAndTests
+	dir=$(or ${dir}, ${TERRAFORM_STACK})
+	. "scripts/terraform/terraform.lib.sh"; \
+	terraform-clean
+	rm -f ${TERRAFORM_STACK}/.terraform.lock.hcl
+
 # ==============================================================================
 # Configuration - please DO NOT edit this section!
 
@@ -71,6 +93,9 @@ ${VERBOSE}.SILENT: \
 	clean \
 	terraform-apply \
 	terraform-destroy \
+	terraform-example-clean \
+	terraform-example-destroy-aws-infrastructure \
+	terraform-example-provision-aws-infrastructure \
 	terraform-fmt \
 	terraform-init \
 	terraform-install \