# Document history
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The following table describes the documentation for this release of Amazon Data Exports.

| Change | Description | Date | 
| --- |--- |--- |
| [New split cost allocation data](https://docs.amazonaws.cn/cur/latest/userguide/split-cost-allocation-data.html) | Added a new split cost allocation data feature that introduces cost and usage data for new container-level resources to Amazon CUR. Introduced new split line item entries in the data dictionary. | June 20, 2023 | 
| [New definitions added to product data dictionary](https://docs.amazonaws.cn/cur/latest/userguide/product-columns.html) | Added 42 new definitions to the Product details page. | February 23, 2022 | 
| [New security chapter](https://docs.amazonaws.cn/cur/latest/userguide/security.html) | Added a new security chapter that provides information about various security controls. Former "Controlling Access" chapter contents have been migrated here. | February 10, 2020 | 
| [Initial launch](#doc-history) | Migrated and reorganized all Amazon CUR content from Billing and Cost Management guide. | January 21, 2020 |