Add basic information about context awareness in Discover (elastic#3022)

This PR adds conceptual information about Discover's ability to provide
experiences specific to certain data types.

Specific documentation updates for describing each experience will be
made separately, either on existing pages, or on new pages if they're
missing today. (see elastic#1739)

Closes: elastic#3017

---------

Co-authored-by: Benjamin Ironside Goldstein <[email protected]>

Author: florent-leborgne

explore-analyze/discover/discover-get-started.md

@@ -22,6 +22,26 @@ Learn how to use **Discover** to:
 * You must have data in {{es}}. Examples on this page use the [ecommerce sample data set](../index.md#gs-get-data-into-kibana), but you can use your own data.
 * You should have an understanding of [{{es}} documents and indices](../../manage-data/data-store/index-basics.md).
 
+## Context-aware data exploration [context-aware-discover]
+
+**Discover** provides tailored interfaces and features for the following data types when accessed from Observability or Security project types or {{kib}} solution views:
+
+* Observability:
+  * **[Logs exploration](/solutions/observability/logs/explore-logs.md)**
+% LINK/PAGE TBD  * **Traces exploration**
+% LINK/PAGE TBD  * **Metrics exploration**
+% * Security: 
+% LINK/PAGE TBD  * **Security data exploration**
+
+This context-aware experience is determined by both your solution context and the type of data you query. When both conditions align, **Discover** provides specific capabilities useful for exploring that specific type of data, and integrates features or paths to other relevant solution applications.
+
+When you access **Discover** outside of a specific solution context, or when working with data types that don't have specialized experiences, you get the default **Discover** interface with all its core functionality for general-purpose data exploration.
+
+### Context-awareness with multiple data types
+
+Your query may include multiple data types that each have tailored experiences; for example, if you query both `logs-*` and `traces-*` indices within an Observability context. 
+
+In this case **Discover** provides the default experience until it detects that you're interacting with a single type of data. For example, when you [](#look-inside-a-document).
 
 ## Load data into Discover [find-the-data-you-want-to-use]
 

explore-analyze/discover/document-explorer.md

@@ -12,6 +12,10 @@ products:
 
 Fine tune your explorations by customizing **Discover** to bring out the the best view of your documents.
 
+:::{tip}
+Discover provides default [context-aware experiences](/explore-analyze/discover/discover-get-started.md#context-aware-discover) tailored to the type of data that you're exploring, and you can further customize your Discover view on top of them.
+:::
+
 :::{image} /explore-analyze/images/kibana-hello-field.png
 :alt: A view of the Discover app
 :screenshot: