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diff --git a/app/models/backends/terraform_aws/backend_methods.rb b/app/models/backends/terraform_aws/backend_methods.rb
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+++ b/app/models/backends/terraform_aws/backend_methods.rb
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+# GOV.UK Mini Environment Admin
+# Copyright © 2018  Christopher Baines <mail@cbaines.net>
+#
+# This file is part of the GOV.UK Mini Environment Admin.
+#
+# The GOV.UK Mini Environment Admin is free software: you can
+# redistribute it and/or modify it under the terms of the GNU Affero
+# General Public License as published by the Free Software Foundation,
+# either version 3 of the License, or (at your option) any later
+# version.
+#
+# The GOV.UK Mini Environment Admin is distributed in the hope that it
+# will be useful, but WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public
+# License along with the GOV.UK Mini Environment Admin.  If not, see
+# <http://www.gnu.org/licenses/>.
+
+module Backends::TerraformAws::BackendMethods
+  def create_data_snapshot
+    GovukGuix::CreateDataSnapshotJob.enqueue(
+      run_remotely_on_host: "ubuntu@guix-daemon.#{domain}",
+      backend_type: self.class.name,
+      backend_id: id
+    )
+  end
+
+  def backend_terraform_variables
+    public_ip_address = ENV[
+      'GOVUK_MINI_ENVIRONMENT_ADMIN_PUBLIC_IP_ADDRESS'
+    ]
+
+    raise 'missing public ip address' if public_ip_address.nil?
+
+    common_terraform_variables.merge(
+      aws_vpc_id: vpc_id,
+      ssh_public_key: ssh_public_key,
+      backend_slug: label.parameterize,
+      mini_environment_admin_guix_public_key: guix_public_key,
+      mini_environment_admin_public_ip_address: public_ip_address
+    )
+  end
+
+  def deploy_backend
+    TerraformWorkingDirectory.new(
+      terraform_state_id,
+      'terraform/aws/backend'
+    ).within_working_directory do
+      RubyTerraform.apply(
+        vars: backend_terraform_variables,
+        auto_approve: true
+      )
+    end
+  end
+
+  def destroy_backend
+    TerraformWorkingDirectory.new(
+      terraform_state_id,
+      'terraform/aws/backend'
+    ).within_working_directory do
+      RubyTerraform.destroy(
+        vars: backend_terraform_variables,
+        force: true
+      )
+    end
+  end
+
+  def available_data_snapshots
+    GovukGuix::DataSnapshot.where(backend: self)
+  end
+end