[DOCS] Add link to Elastic Cloud SAML SSO details (#53)

Author: lcawl

serverless/pages/manage-access-to-org.mdx

@@ -7,6 +7,8 @@ tags: [ 'serverless', 'general', 'organization', 'overview' ]
 
 To allow other users to interact with your projects, you must invite them to join your organization and grant them access to your organization resources and instances.
 
+Alternatively, [configure ((ecloud)) SAML SSO](((cloud))/ec-saml-sso.html) to enable your organization members to join the ((ecloud)) organization automatically. <DocBadge template="technical preview" />
+
 1. Go to the user icon on the header bar and select **Organization**.
 
 2. Click **Invite members**.