DOCS-14316-zones (#5551) (#5621)

* DOCS-14316-zones

* DOCS-14316-zones

* DOCS-14316-zones

* DOCS-14316-zones

* DOCS-14316-zones

* DOCS-14316-zones

* DOCS-14316-zones

* DOCS-14316-zones

* DOCS-14316-zones

* DOCS-14316-zones

---------

Co-authored-by: jason-price-mongodb <jshfjghsdfgjsdjh@aolsdjfhkjsdhfkjsdf.com>

Author: jason-price-mongodb

source/core/replica-set-architecture-geographically-distributed.txt

@@ -26,6 +26,12 @@ Distributing replica set members across geographically distinct data
 centers adds redundancy and provides fault tolerance if one of the data
 centers is unavailable.
 
+Some cloud providers use *regions* and *availability zones*. Regions are
+separate geographic areas. Availability zones are the same as data
+centers and are separate physical locations within a region. A replica
+set has high availability if the nodes are in different availability
+zones because it is unlikely that all zones will fail at the same time.
+
 Distribution of the Members
 ---------------------------
 
@@ -114,13 +120,13 @@ member in Data Center 3:
 Connectivity
 ------------
 
-Verify that your network configuration allows communication among all
-members; i.e. each member must be able to connect to every other member.
-
-.. seealso::
+Verify that your network configuration allows each member to connect to
+every other member.
 
-   - :doc:`/tutorial/deploy-geographically-distributed-replica-set`
-   - :doc:`/tutorial/deploy-replica-set`
-   - :doc:`/tutorial/add-replica-set-arbiter`
-   - :doc:`/tutorial/expand-replica-set`
+Learn More
+----------
 
+- :ref:`server-replica-set-deploy-geo`
+- :ref:`server-replica-set-deploy`
+- :ref:`server-replica-set-deploy-arbiter`
+- :ref:`server-replica-set-deploy-expand`