[Security serverless: Oct 28] Privileged user monitoring - integrations (#3670)

Resolves #3593 by adding
the relevant serverless appiles_to tags for the privileged user
monitoring – integrations feature.

Author: natasha-moore-elastic

solutions/security/advanced-entity-analytics/privileged-user-monitoring-setup.md

@@ -28,7 +28,7 @@ Privileged users typically include accounts with elevated access rights that all
 
 You can define privileged users in the following ways:
 
-* {applies_to}`stack: preview 9.2` [Add a supported integration](#privmon-integrations) with your organization’s user identities. If your environment is already ingesting data from a supported integration, the setup steps are skipped—you're taken directly to the Privileged user monitoring dashboard, where you can start [monitoring user activity](/solutions/security/advanced-entity-analytics/monitor-privileged-user-activitites.md).
+* {applies_to}`stack: preview 9.2` {applies_to}`serverless: preview` [Add a supported integration](#privmon-integrations) with your organization’s user identities. If your environment is already ingesting data from a supported integration, the setup steps are skipped—you're taken directly to the Privileged user monitoring dashboard, where you can start [monitoring user activity](/solutions/security/advanced-entity-analytics/monitor-privileged-user-activitites.md).
 * [Select an existing index](#privmon-index) or create a new custom index with privileged user data.
 * [Bulk-upload](#privmon-upload) a list of privileged users using a CSV or TXT file. 
 * Use the Entity analytics APIs to [mark individual users as privileged]({{kib-apis}}/operation/operation-createprivmonuser) or [bulk-upload multiple privileged users]({{kib-apis}}/operation/operation-privmonbulkuploaduserscsv).
@@ -38,6 +38,7 @@ To get started, find the **Privileged user monitoring** page in the navigation m
 ### Add a supported integration [privmon-integrations]
 ```yaml {applies_to}
 stack: preview 9.2
+serverless: preview
 ```
 
 1. On the **Privileged user monitoring** page, select an integration. The supported integrations are:
@@ -91,7 +92,7 @@ You can use multiple data source types, such as an index and a CSV file, at the
 
 On this page, you can:
 
-* {applies_to}`stack: preview 9.2` Change which integrations you're using as data sources.
+* {applies_to}`stack: preview 9.2` {applies_to}`serverless: preview` Change which integrations you're using as data sources.
 * View, remove, and change indices after initially defining them.
 * Import a new supported file with a list of privileged users.