[CCC-908] Add the DAC preview info (#30550)

Author: kaankoseler

content/en/cloud_cost_management/_index.md

@@ -127,6 +127,10 @@ The table below describes the impact of these permissions in both Cloud Cost Man
 | Resource Catalog (external)       | Permission Required to view cost data       | N/A                                               |
 | API Queries for Cost Data     | Permission Required                           | N/A                                               |
 
+### Data Access Control Preview
+More granular tag-level restrictions are available as part of the [Data Access Control Preview][6]. To request preview access,
+please fill out [this form][7].
+
 ## Further reading
 
 {{< partial name="whats-next/whats-next.html" >}}
@@ -136,3 +140,5 @@ The table below describes the impact of these permissions in both Cloud Cost Man
 [3]: /monitors/types/cloud_cost/
 [4]: /cloud_cost_management/container_cost_allocation
 [5]: /cloud_cost_management/tag_pipelines
+[6]: /account_management/rbac/data_access/
+[7]: https://www.datadoghq.com/product-preview/data-access-control/