diff --git a/DocSum/README.md b/DocSum/README.md
index d87dd55f6..37a678963 100644
--- a/DocSum/README.md
+++ b/DocSum/README.md
@@ -102,25 +102,53 @@ Refer to the [DocSum helm chart](https://github.com/opea-project/GenAIInfra/tree
### Workflow of the deployed Document Summarization Service
-The workflow of the Document Summarization Service, from user's input query to the application's output response, is as follows:
+The DocSum example is implemented using the component-level microservices defined in [GenAIComps](https://github.com/opea-project/GenAIComps). The flow chart below shows the information flow between different microservices for this example.
```mermaid
+---
+config:
+ flowchart:
+ nodeSpacing: 400
+ rankSpacing: 100
+ curve: linear
+ themeVariables:
+ fontSize: 50px
+---
flowchart LR
- subgraph DocSum
+ %% Colors %%
+ classDef blue fill:#ADD8E6,stroke:#ADD8E6,stroke-width:2px,fill-opacity:0.5
+ classDef orange fill:#FBAA60,stroke:#ADD8E6,stroke-width:2px,fill-opacity:0.5
+ classDef orchid fill:#C26DBC,stroke:#ADD8E6,stroke-width:2px,fill-opacity:0.5
+ classDef invisible fill:transparent,stroke:transparent;
+ style DocSum-MegaService stroke:#000000
+
+ %% Subgraphs %%
+ subgraph DocSum-MegaService["DocSum MegaService "]
direction LR
- A[User] <--> |Input query| B[DocSum Gateway]
- B <--> |Post| Megaservice
- subgraph Megaservice["Megaservice"]
- direction TB
- C([ Microservice : llm-docsum-tgi
9000]) -. Post .-> D{{TGI Service
8008}}
- end
- Megaservice --> |Output| E[Response]
+ LLM([LLM MicroService]):::blue
end
- subgraph Legend
- X([Micsrservice])
- Y{{Service from industry peers}}
- Z[Gateway]
+ subgraph UserInterface[" User Interface "]
+ direction LR
+ a([User Input Query]):::orchid
+ UI([UI server
]):::orchid
end
+
+
+ LLM_gen{{LLM Service
}}
+ GW([DocSum GateWay
]):::orange
+
+
+ %% Questions interaction
+ direction LR
+ a[User Input Query] --> UI
+ UI --> GW
+ GW <==> DocSum-MegaService
+
+
+ %% Embedding service flow
+ direction LR
+ LLM <-.-> LLM_gen
+
```
## Consume Document Summarization Service