diff --git a/releasenotes/notes/validations-in-workflow-8ce6a053cacece0d.yaml b/releasenotes/notes/validations-in-workflow-8ce6a053cacece0d.yaml
new file mode 100644
index 000000000..6d8dfc623
--- /dev/null
+++ b/releasenotes/notes/validations-in-workflow-8ce6a053cacece0d.yaml
@@ -0,0 +1,7 @@
+---
+features:
+  - Adds support for calling the external TripleO
+    validations from the deployment and introspection
+    workflows. They default to off, and can be enabled
+    by passing 'True' to the run_validations parameters
+    of these workflows.
diff --git a/workbooks/baremetal.yaml b/workbooks/baremetal.yaml
index 2b23f9b0b..e09407b64 100644
--- a/workbooks/baremetal.yaml
+++ b/workbooks/baremetal.yaml
@@ -343,9 +343,29 @@ workflows:
 
     input:
       - node_uuids
+      - run_validations: False
       - queue_name: tripleo
 
     tasks:
+      pre_run_validations:
+        on-complete:
+          - run_validations: <% $.run_validations %>
+          - start_introspection: <% not $.run_validations %>
+
+      run_validations:
+        workflow: tripleo.validations.v1.run_groups
+        input:
+          group_names:
+            - 'pre-introspection'
+          queue_name: <% $.queue_name %>
+        on-success: start_introspection
+        on-error: set_validations_failed
+
+      set_validations_failed:
+        on-success: send_message
+        publish:
+          status: FAILED
+          message: <% task(run_validations).result %>
 
       start_introspection:
         on-success: wait_for_introspection_to_finish
@@ -394,6 +414,7 @@ workflows:
     description: Introspect all nodes in a 'manageable' state.
 
     input:
+      - run_validations: False
       - queue_name: tripleo
 
     tasks:
@@ -417,6 +438,7 @@ workflows:
         workflow: tripleo.baremetal.v1.introspect
         input:
           node_uuids: <% $.managed_nodes %>
+          run_validations: <% $.run_validations %>
           queue_name: <% $.queue_name %>
         publish:
           introspected_nodes: <% task(introspect_manageable).result.introspected_nodes %>
diff --git a/workbooks/deployment.yaml b/workbooks/deployment.yaml
index 816eba3fe..3975f425d 100644
--- a/workbooks/deployment.yaml
+++ b/workbooks/deployment.yaml
@@ -114,6 +114,7 @@ workflows:
 
     input:
       - container
+      - run_validations: False
       - timeout: 240
       - queue_name: tripleo
 
@@ -124,7 +125,25 @@ workflows:
         input:
           container: <% $.container %>
           queue_name: <% $.queue_name %>
-        on-complete: get_heat_stack
+        on-complete:
+          - run_validations: <% $.run_validations %>
+          - get_heat_stack: <% not $.run_validations %>
+
+      run_validations:
+        workflow: tripleo.validations.v1.run_groups
+        input:
+          group_names:
+            - 'pre-deployment'
+          plan: <% $.container %>
+          queue_name: <% $.queue_name %>
+        on-success: get_heat_stack
+        on-error: set_validations_failed
+
+      set_validations_failed:
+        on-success: send_message
+        publish:
+          status: FAILED
+          message: <% task(run_validations).result %>
 
       get_heat_stack:
         action: heat.stacks_get stack_id=<% $.container %>
@@ -140,7 +159,10 @@ workflows:
           message: The Heat stack is busy.
 
       deploy:
-        action: tripleo.deployment.deploy timeout=<% $.timeout %> container=<% $.container %>
+        action: tripleo.deployment.deploy
+        input:
+          timeout: <% $.timeout %>
+          container: <% $.container %>
         on-success: send_message
         on-error: set_deployment_failed