add diagram for object replication

Author: tamram

articles/storage/blobs/media/object-replication-overview/object-replication-diagram.png

@@ -21,6 +21,10 @@ Object replication (preview) asynchronously copies block blobs between a source
 - **Optimizing data distribution.** You can process or analyze data in a single location and then replicate just the results to additional regions.
 - **Optimizing costs.** After your data has been replicated, you can reduce costs by moving it to the archive tier using life cycle management policies.
 
+The following diagram shows how you can use object replication to replicate block blobs from a source storage account in one region to destination accounts in two different regions.
+
+:::image type="content" source="media/object-replication-overview/object-replication-diagram.png" alt-text="Diagram showing how object replication works":::
+
 To learn how to configure object replication, see [Configure object replication (preview)](object-replication-configure.md).
 
 ## Object replication policies and rules