diff --git a/doc/source/index.rst b/doc/source/index.rst
index 108bd0c..9885f61 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -1,8 +1,12 @@
 Data Ingestion Service
 ======================
 
+Data Ingestion Service (DIS) addresses the challenge of transmitting data from outside the cloud to inside the cloud. DIS builds data intake streams for custom applications capable of processing or analyzing streaming data. DIS continuously captures, transmits, and stores terabytes of data from hundreds of thousands of sources every hour, such as logs, Internet of Things (IoT) data, social media feeds, website clickstreams, and location-tracking events.
+
 .. directive_wrapper::
    :class: container-sbv
 
    .. service_card::
-      :service_type: dis
\ No newline at end of file
+      :service_type: dis
+      :umn: This document provides detailed operation guidance of DIS to help you learn and use DIS.
+      :api-ref: This document introduces API reference provided by DIS and describes functions and parameters of each API.