#### Audience Sync vs Audience Export

In the [previous article](https://www.brimit.com/blog/cdp-8-rfm-clv), we learned how to segment users in **Sitecore CDP** by *CLV* and predict *churn* customers. In this article, we will look at what we can do once we have that *churn* segment.

This will be a good example to compare **Audience Sync** and **Audience Export** *(although Audience Export is presented as a replacement for Audience Sync, there are actually significant differences in both  at the moment)*.  Let's start with Audience export as a new feature that was released 2 weeks ago.

#### Audience Export

Sitecore CDP lets you export audiences built from a segment. The exported data can help you activate audiences outside Sitecore CDP.
In fact Audience export can do almost everything that Audience Sync can do, I will highlight only the essential advantages:

- - export delta dataset
- - test the export before running it
- - friendly UI
- - fast speed

And the main advantage here is of course the **export delta dataset**. How useful this is, for example, for our task with Churn customers: 
*we can track users who are just now getting into churn segment, and we don't need those who have been there for a long time*.

When creating an audience export, we can add a connection to it. When the export finishes running, Sitecore CDP will send a webhook notification to the connected external API.
We will create a connection to Sitecore Connect and configure it to extract the output of the audience export and then forward requests to Sitecore Send *(to add user to the churn automation campaign)*. Let`s start implementation.

First, we will create connection to Sitecore Send. To do this, navigate to **Developers center - Connections** and click **Create connection** button and select **Sitecore Connect** option:
![Sitecore CDP - Create connection to Sitecore Connect](https://www.brimit.com/-/media/project/brimit/blog/2023/create-new_connection.png)

Next, configure connection the same way as any other connection in Sitecore CDP *(authentification, request, and input/output fields)*:
![Sitecore CDP - Configure connection to Sitecore Connect](https://www.brimit.com/-/media/project/brimit/blog/2023/setup_connection.png)

Once connection is ready, lets create new **Audience Export**. navigate to **Audience sync - Audience Export**, click **Create export** botton and select **Delta** option *(we will track only users who are just now getting into churn segment, and we don't need those who have been there for a long time)*:
![Sitecore CDP - Create Audience Export Delta](https://www.brimit.com/-/media/project/brimit/blog/2023/audience_sync_create_delta_export.png)

Type name of your connection *(demo\_delta\_churn\_customers)*, select segment *(Churm customers)*,  scroll down to **Notifications** section and configure webhook notification *(select previoulsy created **Sitecore Connect** connection and tick **Notify me** checkbox to receive notification email or type any other email address/addresses)*:

![Sitecore CDP - Configure Audience Export webhook notification](https://www.brimit.com/-/media/project/brimit/blog/2023/audience_export_webhook.png)

Next, lets configure **Output format** of our export. 
Navigate to the **Javascript** tab and paste the code below for receiving full name of our customers:
![](https://www.brimit.com/-/media/project/brimit/blog/2023/audience_export_javascript.png)

```

(function () {
    
 function getFullName(){
     var name = '';
     if (guest.firstName){
         name+=guest.firstName;
     }
     if (guest.lastName){
         name+=' '+guest.lastName;
     }
     return name;
 }
    
  return { name: getFullName()};
})();
```

Then navigate to **Output structure** tab and configure output format as shown below:
![Sitecore CDP - Configure Audience Export output format fields](https://www.brimit.com/-/media/project/brimit/blog/2023/audience_export_output.jpg)

That`s all. Audience export is ready and we can start tesing.

To start testing, we need to click **Schedule** button and wait for when exporting will be executed. **There is no way to run export immediately for Delta export, if you want to debug your export you should create Full export instead of Delta export and use 'Run now' button in your Full export.**

Once exporting is finished, you will receive email and webhook notification request to your endpoint *(Sitecore Connect in our case)*:
![Sitecore CDP - Audience Export email notification](https://www.brimit.com/-/media/project/brimit/blog/2023/audience_export_email_notification.png)

Format of webhook request that you will receive in your endpoint is following:

```

Request Timestamp:        11/18/2023 1:36:48 PM
Request Method:           POST
Request Headers:           Accept=application/jsonAccept-Encoding=gzipConnection=Keep-AliveContent-Type=application/jsonMax-Forwards=10Transfer-Encoding=chunkedUser-Agent=Jersey/2.35 (Apache HttpClient 4.5.13)X-Correlation-Id=f85a9e76-703a-4cbf-ae4e-c40ff0cefd4bX-Forwarded-For=52.19.243.67:52035X-ARR-LOG-ID=0ceb428e-c4b5-4682-a755-e02cc1e5950f
Request ContentType:      application/json
Request ContentBody:      {
  "apiUrl": "https://api-eu-west-1-production.boxever.com",
  "audienceExportName": "demo_delta_churn_customers",
  "clientKey": "xxxxxxxxxxxxxxxxxxxxxxxxxx",
  "definitionType": "FULL_SYNC",
  "executionRef": "c944516d-1c4a-447e-9de8-fcaee95ed960",
  "executionType": "INSTANT_RUN",
  "friendlyId": "demo_delta_churn_customers",
  "segmentName": "Churned customers",
  "status": "SUCCESS"
}	
```

In **Sitecore Connect** we will send request to **Sitecore CDP**  to get export download links, then request to Amazon to download  gzip files, then uncompress files, split by JSON lines and send requests to **Sitecore Send** , schematically as follows:
![Sitecore Connect - Audience Export webhook](https://www.brimit.com/-/media/project/brimit/blog/2023/sitecore_connect.png)

#### Audience Sync

An audience sync is an export of segment data to an external destination such as a remote server. For example, you can create an audience sync to power an ad campaign on a social media platform. But **Audience Sync** has one big advantage: *it can send a webhook for each record from your segment in the format you want*. 

**Example:** you want to automatically add a user to a campaign in **Sitecore Send** when he/she enters a *churn* segment. To do this, you need to send a request from **Sitecore CDP** to **Sitecore Send** and pass user information *(email, username)* as parameters. **Audience Export** can not do it, but **Audience Sync** can.

Before we start implementing **Audience sync**, let`s first create **Batch Web Hook**.
Navigate to **Settings - External Services** and click **Create** button:
![Sitecore CDP - Add external service](https://www.brimit.com/-/media/project/brimit/blog/2023/audience_export_extarnal_services.png)

Select **Batch Web Hook** in **Service** dropdown and type a name of your service *(Batch Web Hook 1)*:
![Sitecore CDP - Add external service Web Hook Batch](https://www.brimit.com/-/media/project/brimit/blog/2023/audience_export_webhook_batch.png)

You can additionally configure **Authorisation** to your webhook service, but we do not need it for **Sitecore Send** *(it uses **apiKey**)*. 

Next, we need to create **Audience sync template**. Navigate to **Developer center - Audience sync template** and click **Create template** button.
Select previously created **Batch Web Hook 1** service in **Select service credentials** dropdown:
![Sitecore CDP - Create Audience synh template](https://www.brimit.com/-/media/project/brimit/blog/2023/audience_sync_create_template.png)

Configure **Audience Sync template** as following:
![Sitecore CDP - Audience sync template configuration](https://www.brimit.com/-/media/project/brimit/blog/2023/audience_sync_service_credentials.png)

![Sitecore CDP - Audience sync template configuration](https://www.brimit.com/-/media/project/brimit/blog/2023/audience_sync_webhook.png)

Request format to **Sitecore Send** is following:

```

POST https://api.moosend.com/v3/subscribers/{{MailingListID}}/subscribe.{{Format}}?apikey={{apiKey}}

{
    "Email": "email@example.com",
    "Name": "User Name",
    "CustomFields": [
        "Some Custom Field=123"
    ]
}
```

And the last thing we need to do is to create new **Audience Sync**. Navigate to **Audience sync - Audience sync** and click **Create Sync** button. 
Select previously created template, select **Churn customers** segment and fill other required fields *(name, description, etc.).*
Thats is all, now you can run audience sync by clicking **Test Webhook** button or by clicking **Save - Run now**.

Format of webhook request that you will receive in your endpoint is following:

```

Request Timestamp:        11/18/2023 3:31:25 PM
Request Method:           POST
RequestHeaders:           Accept-Encoding=gzip,deflate
Connection=Keep-Alive
Content-Length=69
Content-Type=application/json
Max-Forwards=10
User-Agent=Apache-HttpClient/4.5.1 (Java/1.8.0_282)
X-Forwarded-For=63.34.205.183:28423
X-ARR-LOG-ID=9bc66fa5-0c4a-4299-aa7d-fd841524aa0a

Request ContentType:      application/json
Request ContentBody:      {
    "email": "email@example.com",
    "name": "User Name",
}
```

- [Part 1 - Sitecore CDP OOTB Churn Prediction & CLV Calculation.](https://www.brimit.com/blog/cdp-8-rfm-clv)

###### Author

[!\[sergey-200\](https://www.brimit.com/-/jssmedia/feature/blogs/authors/sergey-200.jpg?h=197&iar=0&w=200&hash=0D636570F87F1C13C39E06EB19D9DF06)
Sergey Baranov
Sitecore MVP/ Senior Sitecore Developer](https://www.brimit.com/blog/author?authors=Sergey%20Baranov)

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