(DOCSP-15358) Improve landing page diagrams (#304)

* (DOCSP-15358) Improve landing page diagrams

Author: zach-carr

source/images/bi-connector/cloud-bi-vert.png

@@ -29,7 +29,7 @@ The |bi| acts as a layer that translates queries and data between a
 stores no data, and purely serves to bridge your MongoDB cluster with
 business intelligence tools.
 
-.. figure:: /images/bi-connector/cloud-none-vert.png
+.. figure:: /images/bi-connector/components-all.jpg
    :figwidth: 700px
    :align: center
    :alt: Diagram showing that other BI tools communicate with the DSN, which communicates with MongoDB's BI Connector, which in turn communicates with the MongoDB database.
@@ -76,7 +76,7 @@ In this scenario, the database and |bi-short| applications both run on
 {+atlas+}, and you set up your :doc:`DSN </tutorial/create-system-dsn>`
 with connection information that {+atlas+} provides.
 
-.. figure:: /images/bi-connector/cloud-bi-vert.png
+.. figure:: /images/bi-connector/components-cloud.jpg
    :alt: Hosted DB and BI Connector
    :figwidth: 700px
    :align: center
@@ -91,7 +91,7 @@ specify a remote database address with the
 :option:`--mongo-uri <mongosqld --mongo-uri>` option when you start
 the BI Connector's :doc:`mongosqld process </reference/mongosqld>`.
 
-.. figure:: /images/bi-connector/cloud-db-vert.png
+.. figure:: /images/bi-connector/components-onprem-bi-atlas.jpg
    :alt: On Premises DB and Local BI Connector
    :figwidth: 700px
    :align: center
@@ -104,7 +104,7 @@ elsewhere on your network, in which case you can set up your
 :doc:`DSN </tutorial/create-system-dsn>` to point to the |bi-short|
 server address.
 
-.. figure:: /images/bi-connector/cloud-onprem-vert.png
+.. figure:: /images/bi-connector/components-onprem.jpg
    :alt: On Premises DB and BI Connector
    :figwidth: 700px
    :align: center