diff --git a/README.md b/README.md
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@@ -3,7 +3,7 @@
 [![Celeborn CI](https://github.com/apache/incubator-celeborn/actions/workflows/maven.yml/badge.svg)](https://github.com/apache/incubator-celeborn/actions/workflows/maven.yml)  
 Celeborn is dedicated to improving the efficiency and elasticity of
 different map-reduce engines and provides an elastic, high-efficient 
-management service for shuffle data.
+management service for intermediate data including shuffle data, spilled data, result data, etc. Currently Celeborn is focusing on shuffle data.
 
 ## Internals
 ### Architecture