Update Azure AI Service creation instructions and replace image files…

docs/create_azure_ai_service.md

@@ -1,21 +1,48 @@
 # How To Create Azure AI Service
-1. Navigate to https://aka.ms/CognitiveServicesAIServices .
-2. Select your Azure subscription.
-3. Select the available Resource group.
-4. Choose the region which support Content Understanding service from below tables.
-   | Geography | Region         | Region Identifier|
-   | --------- | -------------- | ---------------- |
-   | US        | West US        | westus           |
-   | Europe    | Sweden Central | swedencentral    |
-   | Australia | Australia East | australiaeast    |
-5. Enter a name for your resource.
-6. Choose a price plan.  
+
+This guide covers the latest configuration using **Azure AI Foundry**, including creating a Foundry Hub and Project, and deploying Azure AI Content Understanding.
+
+## 1. Create a Foundry Hub
+- Go to [Azure Portal AI Foundry Resource](https://portal.azure.com/#create/Microsoft.CognitiveServicesAIFoundry).
+- Select your Azure subscription.
+- Choose or create a Resource Group.
+- **Choose a supported region** from the table below:
+
+   | Geography | Region         | Region Identifier   |
+   | --------- | -------------- | ------------------ |
+   | US        | West US        | westus             |
+   | Europe    | Sweden Central | swedencentral      |
+   | Australia | Australia East | australiaeast      |
+
+- Enter a name for your Content Understanding resource.
+- Select a pricing plan.  
     <img src="./create_srv_1.png" width="600" />
-7. Configure other settings for your resource as needed, read, and accept the conditions (as applicable), and then select Review + create.  
+- Configure additional settings as needed, read and accept the terms, then click **Create**.  
     <img src="./create_srv_2.png" width="600" />
-8. Azure will run a quick validation check, after a few seconds you should see a green banner that says Validation Passed.
-9. Once the validation banner appears, select the Create button from the bottom-left corner.
-10. After you select create, you'll be redirected to a new page that says Deployment in progress. After a few seconds, you'll see a message that says, Your deployment is complete.
-11. Navigate to the resouce. In the left navigation menu, select "Keys and Endpoint", then get the **key** and **endpoint**.   
-    <img src="./create_srv_3.png" width="600" />  
-Now，you could start with these information to run the samples.
+- Wait for Azure's validation (look for a green "Validation Passed" banner).
+- Click **Create**. Deployment will begin, and after a few seconds, you should see "Your deployment is complete."
+
+## 2. Get Keys and Endpoint
+- Navigate to your deployed resource.
+- In the left menu, select **Keys and Endpoint**.
+- Copy the following information:
+  - **Endpoint**: Format is  
+    ```
+    AZURE_AI_ENDPOINT = "https://<AzureAIContentUnderstandingResourceName>.services.ai.azure.com/"
+    ```
+  - **Primary Key**:  
+    ```
+    AZURE_AI_API_KEY = <your_primary_key>
+    ```
+  - **API Version**:  
+    ```
+    AZURE_AI_API_VERSION = "2025-05-01-preview"
+    ```
+    <img src="./create_srv_3.png" width="600" />
+
+Now you are ready to use these credentials to run the samples.
+
+---
+**Note:**  
+- Always use the **Foundry Hub > Foundry Project** structure for Azure AI Content Understanding configuration.
+- Make sure to select a supported region for Content Understanding during deployment.