diff --git a/extensions/deploy_replace_undeploy/standard/20-044.adoc b/extensions/deploy_replace_undeploy/standard/20-044.adoc
index a10d9783..19178eb5 100644
--- a/extensions/deploy_replace_undeploy/standard/20-044.adoc
+++ b/extensions/deploy_replace_undeploy/standard/20-044.adoc
@@ -39,6 +39,8 @@ include::sections/clause_8_docker.adoc[]
 
 include::sections/clause_9_cwl.adoc[]
 
+include::sections/clause_10_argo.adoc[]
+
 include::sections/clause_10_oas.adoc[]
 
 include::sections/clause_11_media_types.adoc[]
diff --git a/extensions/deploy_replace_undeploy/standard/recommendations/deploy-replace-undeploy/deploy/REC_body-argo.adoc b/extensions/deploy_replace_undeploy/standard/recommendations/deploy-replace-undeploy/deploy/REC_body-argo.adoc
new file mode 100644
index 00000000..6f2358c6
--- /dev/null
+++ b/extensions/deploy_replace_undeploy/standard/recommendations/deploy-replace-undeploy/deploy/REC_body-argo.adoc
@@ -0,0 +1,15 @@
+[[rec_deploy-replace-undeploy_deploy_body-argo]]
+[recommendation]
+====
+[%metadata]
+label:: /rec/deploy-replace-undeploy/deploy/body-argo
+
+part:: If a process can be represented for the intended use as a <<rc_argo,Argo Application>>, implementations should consider supporting the <<rc_argo,Argo>> encoding for describing the process to be deployed to the API.
+
+part:: The media type `application/argo` shall be used to indicate that request body contains a processes description encoded as a <<rc_argo,Argo Application>>.
+
+part:: If the Argo contains more than one workflow, an additional `w` query parameter may be used to reference the workflow id to be deployed.
+
+part:: The server should validate the Argo at the request time. In case, the server cannot find the `w` identifier within the workflow from the Argo provided, a 400 status code is expected with the type "worflow-not-found".
+
+====
diff --git a/extensions/deploy_replace_undeploy/standard/recommendations/deploy-replace-undeploy/replace/REC_body-argo.adoc b/extensions/deploy_replace_undeploy/standard/recommendations/deploy-replace-undeploy/replace/REC_body-argo.adoc
new file mode 100644
index 00000000..79584c5b
--- /dev/null
+++ b/extensions/deploy_replace_undeploy/standard/recommendations/deploy-replace-undeploy/replace/REC_body-argo.adoc
@@ -0,0 +1,10 @@
+[[rec_deploy-replace-undeploy_replace_body-argo]]
+[recommendation]
+====
+[%metadata]
+label:: /rec/deploy-replace-undeploy/replace/body-argo
+
+part:: If a process can be described for the intended use as a <<rc_argo,Argo graph>>, implementations should consider supporting the <<rc_argo,Argo>> encoding for describing the replacement process.
+
+part:: The media type `application/argo` shall be used to indicate that request body contains a processes description encoded as <<rc_ogcapppkg,Argo>>.
+====
diff --git a/extensions/deploy_replace_undeploy/standard/recommendations/ogcapppkg/REC_ogcapppkg_execution-unit-argo.adoc b/extensions/deploy_replace_undeploy/standard/recommendations/ogcapppkg/REC_ogcapppkg_execution-unit-argo.adoc
new file mode 100644
index 00000000..5ba79d88
--- /dev/null
+++ b/extensions/deploy_replace_undeploy/standard/recommendations/ogcapppkg/REC_ogcapppkg_execution-unit-argo.adoc
@@ -0,0 +1,19 @@
+[[rec_ogcapppkg_execution-unit-argo]]
+[recommendation]
+====
+[%metadata]
+label:: /rec/ogcapppkg/execution-unit-argo
+
+part:: If the execution unit is encoded in Argo then it is recommended that the contents of the execution unit be the properties:
+ * `type`  and `href` if passed by reference
+ * `value` and `mediaType` if passed by value
+
+part:: The value of the `type` property shall be `application/argo`, when for `mediaType` it should be `application/argo+json`.
+
+part:: The value of the `href` property shall be a reference to the Argo encoded file. The value of the `value` property shall be the Argo encoded in json format.
+
+part:: If the Argo contains more than a single workflow identifier, an addition `w` query parameter may be used to target a specific workflow id to be deployed.
+
+part:: The server should validate the Argo at the request time. In case, the server cannot find the `w` identifier within the workflow from the Argo provided, a 400 status code is expected with the type "argo-worflow-not-exist".
+
+====
diff --git a/extensions/deploy_replace_undeploy/standard/requirements/requirements_class_argo.adoc b/extensions/deploy_replace_undeploy/standard/requirements/requirements_class_argo.adoc
new file mode 100644
index 00000000..f84bc0cc
--- /dev/null
+++ b/extensions/deploy_replace_undeploy/standard/requirements/requirements_class_argo.adoc
@@ -0,0 +1,11 @@
+[[rc_cwl]]
+[requirements_class]
+====
+[%metadata]
+label:: http://www.opengis.net/spec/ogcapi-processes-2/1.0/req/argo
+obligation:: requirement
+subject:: Web API
+inherit:: <<OAProc-1,OGC API - Processes - Part 1: Core>>
+inherit:: <<rc_deploy-replace-undeploy,http://www.opengis.net/spec/ogcapi-processes-2/1.0/req/deploy-replace-undeploy>>
+inherit:: Argo Workflow Language <<Argo_Workflow_Language>>
+====
diff --git a/extensions/deploy_replace_undeploy/standard/sections/clause_10_argo.adoc b/extensions/deploy_replace_undeploy/standard/sections/clause_10_argo.adoc
new file mode 100644
index 00000000..74bbc122
--- /dev/null
+++ b/extensions/deploy_replace_undeploy/standard/sections/clause_10_argo.adoc
@@ -0,0 +1,16 @@
+== Requirements Class "Argo"
+
+[[argo-overview]]
+=== Overview
+
+include::../requirements/requirements_class_argo.adoc[]
+
+A server that implements this conformance class supports the use of Argo encoding when interacting with the deploy-replace-undeploy extension from a processes API.
+
+In consequence, the following recommandations become requirements:
+
+ * <<rec_deploy-replace-undeploy_deploy_body-argo,/rec/deploy-replace-undeploy/deploy/body-argo>>
+ * <<rec_deploy-replace-undeploy_replace_body-argo,/rec/deploy-replace-undeploy/replace/body-argo>>
+ * <<rec_ogcapppkg_execution-unit-argo,/rec/deploy-replace-undeploy/ogcapppkg/execution-unit-argo>>
+
+