Add content for Backend > Search (#1764)

Closes #281

@gforcada @jensens

docs/backend/search.md

@@ -1,16 +1,30 @@
 ---
 myst:
   html_meta:
-    "description": ""
-    "property=og:description": ""
-    "property=og:title": ""
-    "keywords": ""
+    "description": "How to index and search content in Plone"
+    "property=og:description": "How to index and search content in Plone"
+    "property=og:title": "Search"
+    "keywords": "Plone, search, index, querystring, catalog"
 ---
 
 (backend-search-label)=
 
 # Search
 
+To index and search content in Plone, see the Plone 5 documentation {doc}`/develop/plone/searching_and_indexing/index`.
+
+Alternatively, you can integrate any open source search engine with your Plone site.
+
+-   [Solr](https://solr.apache.org/) - See the add-on [`collective.solr`](https://github.com/collective/collective.solr) and its [documentation](https://collectivesolr.readthedocs.io/en/latest/).
+-   [`collective.elasticsearch`](https://github.com/collective/collective.elasticsearch)
+-   [`collective.elastic.plone`](https://github.com/collective/collective.elastic.plone)
+
+You can find a comprehensive list of search options in [Awesome Plone - Searching and Categorizing](https://github.com/collective/awesome-plone?tab=readme-ov-file#searching-and-categorizing)
+
+
+```{todo}
+Help us [Migrate content from v5 "Queries, Search And Indexing" #1730](https://github.com/plone/documentation/issues/1730).
+```
 
 (backend-search-catalog-label)=