Cf request router (#242)

* Update architecture.md

* Update architecture.md

* Update architecture

Updated hybrid arch with Routing Service component and added description of the same

* Update architecture.md

Author: NimRegev

_docs/getting-started/architecture.md

@@ -98,6 +98,19 @@ The App-Proxy performs write and state-change operations:
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+#### Request Routing Service 
+The Request Routing Service is installed on the same cluster as the Codefresh Runtime in the customer environment.
+It receives requests from the Ingress Controller, and forwards the request URLs to the Application Proxy, and webhooks directly to the Event Sources. 
+
+
+> Important:  
+  The Request Routing Service is available from runtime version 0.0.543 and higher.  
+  Older runtime versions are not affected as there is complete backward compatibility, and the Ingress Controller continues to route incoming requests.
+
+{::nomarkdown}
+<br>
+{:/}
+
 #### Argo Project 
 
 The Argo Project includes:
@@ -148,6 +161,11 @@ See [Ingress controller]({{site.baseurl}}/docs/runtime/requirements/#ingress-con
 <br>
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+
+  
+
+
+
 #### Managed clusters
 Managed clusters are external clusters registered to a provisioned hosted or hybrid runtime(s).