Connect to Kafka PL/PSC service from TiDB Cloud

TOC-tidb-cloud.md

@@ -287,6 +287,9 @@
   - [To Kafka Sink](/tidb-cloud/changefeed-sink-to-apache-kafka.md)
   - [To TiDB Cloud Sink](/tidb-cloud/changefeed-sink-to-tidb-cloud.md)
   - [To Cloud Storage](/tidb-cloud/changefeed-sink-to-cloud-storage.md)
+  - Reference
+    - [Set Up Self-Hosted Kafka Private Link Service in AWS](/tidb-cloud/setup-self-hosted-kafka-private-link-service.md)
+    - [Set Up Self-Hosted Kafka Private Service Connect in Google Cloud](/tidb-cloud/setup-self-hosted-kafka-private-service-connect.md)
 - Disaster Recovery
   - [Recovery Group Overview](/tidb-cloud/recovery-group-overview.md)
   - [Get Started](/tidb-cloud/recovery-group-get-started.md)

tidb-cloud/tidb-cloud-billing-ticdc-rcu.md

@@ -6,9 +6,11 @@ aliases: ['/tidbcloud/tidb-cloud-billing-tcu']
 
 # Changefeed Billing
 
+## RCU cost
+
 TiDB Cloud measures the capacity of [changefeeds](/tidb-cloud/changefeed-overview.md) in TiCDC Replication Capacity Units (RCUs). When you [create a changefeed](/tidb-cloud/changefeed-overview.md#create-a-changefeed) for a cluster, you can select an appropriate specification. The higher the RCU, the better the replication performance. You will be charged for these TiCDC changefeed RCUs.
 
-## Number of TiCDC RCUs
+### Number of TiCDC RCUs
 
 The following table lists the specifications and corresponding replication performances for changefeeds:
 
@@ -26,6 +28,12 @@ The following table lists the specifications and corresponding replication perfo
 >
 > The preceding performance data is for reference only and might vary in different scenarios. It is strongly recommended that you conduct a real workload test before using the changefeed feature in a production environment. For further assistance, contact [TiDB Cloud support](/tidb-cloud/tidb-cloud-support.md#get-support-for-a-cluster).
 
-## Price
+### Price
 
 To learn about the supported regions and the price of TiDB Cloud for each TiCDC RCU, see [Changefeed Cost](https://www.pingcap.com/tidb-cloud-pricing-details/#changefeed-cost).
+
+## Private Data Link cost
+
+If you choose the **Private Link** or **Private Service Connect** network connectivity method, additional **Private Data Link** costs will be incurred. These charges fall under the [Data Transfer Cost](https://www.pingcap.com/tidb-dedicated-pricing-details/#data-transfer-cost) category.
+
+The price of **Private Data Link** is **$0.01/GiB**, the same as **Data Processed** of [AWS Interface Endpoint pricing](https://aws.amazon.com/privatelink/pricing/#Interface_Endpoint_pricing) and **Consumer data processing** of [Google Cloud Private Service Connect pricing](https://cloud.google.com/vpc/pricing#psc-forwarding-rules).