[obs] Fixes and versioning (#712)

Related: #583

Author: karenzone

solutions/observability.md

@@ -3,8 +3,8 @@ mapped_urls:
   - https://www.elastic.co/guide/en/serverless/current/what-is-observability-serverless.html
   - https://www.elastic.co/guide/en/observability/current/index.html
 applies_to:
-  stack: ga
-  serverless: ga
+  stack: 
+  serverless: 
 ---
 
 # Observability

solutions/observability/cloud.md

@@ -2,6 +2,8 @@
 navigation_title: "Cloud"
 mapped_pages:
   - https://www.elastic.co/guide/en/observability/current/cloud-monitoring.html
+applies_to:
+  stack:
 ---
 
 

solutions/observability/incident-management.md

@@ -2,6 +2,9 @@
 mapped_urls:
   - https://www.elastic.co/guide/en/observability/current/incident-management.html
   - https://www.elastic.co/guide/en/serverless/current/incident-management.html
+applies_to:
+  stack: 
+  serverless: 
 ---
 
 # Incident management [incident-management]

solutions/observability/infra-and-hosts.md

@@ -4,6 +4,9 @@ mapped_urls:
   - https://www.elastic.co/guide/en/serverless/current/infrastructure-and-host-monitoring-intro.html
 
 navigation_title: "Infrastructure and hosts"
+applies_to:
+  stack: 
+  serverless: 
 ---
 
 # Infrastructure and host monitoring [infrastructure-and-host-monitoring-intro]

solutions/observability/infra-and-hosts/analyze-compare-hosts.md

@@ -2,6 +2,9 @@
 mapped_urls:
   - https://www.elastic.co/guide/en/observability/current/analyze-hosts.html
   - https://www.elastic.co/guide/en/serverless/current/observability-analyze-hosts.html
+applies_to:
+  stack: 
+  serverless:
 ---
 
 # Analyze and compare hosts [observability-analyze-hosts]
@@ -16,7 +19,9 @@ The **Hosts** page provides a metrics-driven view of your infrastructure backed
 * View historical data to rule out false alerts and identify root causes.
 * Filter and search the data to focus on the hosts you care about the most.
 
-To open **Hosts**, find **Infrastructure** in the main menu or use the [global search field](/explore-analyze/find-and-organize/find-apps-and-objects.md).
+To access the **Hosts** page in:
+- **Elastic Stack,** find **Infrastructure** in the main menu or use the [global search field](/explore-analyze/find-and-organize/find-apps-and-objects.md).
+- **Serverless,** go to **Infrastructure → Hosts** in your Elastic Observability Serverless project. 
 
 :::{image} ../../../images/serverless-hosts.png
 :alt: Screenshot of the Hosts page

solutions/observability/infra-and-hosts/analyze-infrastructure-host-metrics.md

@@ -2,6 +2,9 @@
 mapped_urls:
   - https://www.elastic.co/guide/en/observability/current/monitor-infrastructure-and-hosts.html
   - https://www.elastic.co/guide/en/serverless/current/observability-infrastructure-monitoring.html
+applies_to:
+  stack: 
+  serverless: 
 ---
 
 # Analyze infrastructure and host metrics [observability-infrastructure-monitoring]

solutions/observability/infra-and-hosts/explore-infrastructure-metrics-over-time.md

@@ -1,6 +1,8 @@
 ---
 mapped_pages:
   - https://www.elastic.co/guide/en/observability/current/explore-metrics.html
+applies_to:
+  stack: 
 ---
 
 # Explore infrastructure metrics over time [explore-metrics]

solutions/observability/infra-and-hosts/tutorial-observe-kubernetes-deployments.md

@@ -1,6 +1,8 @@
 ---
 mapped_pages:
   - https://www.elastic.co/guide/en/observability/current/monitor-kubernetes.html
+applies_to:
+  stack: 
 ---
 
 # Tutorial: Observe your Kubernetes deployments [monitor-kubernetes]

solutions/observability/infra-and-hosts/tutorial-observe-nginx-instances.md

@@ -1,6 +1,8 @@
 ---
 mapped_pages:
   - https://www.elastic.co/guide/en/observability/current/monitor-nginx.html
+applies_to:
+  stack: 
 ---
 
 # Tutorial: Observe your nginx instances [monitor-nginx]

solutions/observability/infra-and-hosts/universal-profiling.md

@@ -1,6 +1,8 @@
 ---
 mapped_pages:
   - https://www.elastic.co/guide/en/observability/current/universal-profiling.html
+applies_to:
+  stack: 
 ---
 
 # Universal Profiling [universal-profiling]

solutions/observability/infra-and-hosts/view-infrastructure-metrics-by-resource-type.md

@@ -2,13 +2,18 @@
 mapped_urls:
   - https://www.elastic.co/guide/en/observability/current/view-infrastructure-metrics.html
   - https://www.elastic.co/guide/en/serverless/current/observability-view-infrastructure-metrics.html
+applies_to:
+  stack: 
+  serverless: 
 ---
 
 # View infrastructure metrics by resource type [observability-view-infrastructure-metrics]
 
 The **Infrastructure Inventory** page provides a metrics-driven view of your entire infrastructure grouped by the resources you are monitoring. All monitored resources emitting a core set of infrastructure metrics are displayed to give you a quick view of the overall health of your infrastructure.
 
-To open **Infrastructure inventory**, find **Infrastructure** in the main menu or use the [global search field](/explore-analyze/find-and-organize/find-apps-and-objects.md).
+To open the **Infrastructure inventory** page in:
+- **Elastic Stack,** find **Infrastructure** in the main menu or use the [global search field](/explore-analyze/find-and-organize/find-apps-and-objects.md).
+- **Serverless,** go to **Infrastructure inventory** in your Observability Serverless project.
 
 :::{image} ../../../images/observability-metrics-app.png
 :alt: Infrastructure UI in {kib}