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AWS lake-formation documentation change

Service: lake-formation · 2026-02-10 · Documentation low

File: lake-formation/latest/dg/optimize-ram.md

Summary

Added documentation for Cross Account Version 5 which introduces wildcard patterns for resource sharing, allowing unlimited tables and optimizing RAM usage. Updated CLI and console references to include version 5.

Security assessment

The changes focus on scalability improvements and resource management optimizations by introducing version 5 cross-account sharing with wildcard patterns. While this affects access control patterns, there is no explicit mention of security vulnerabilities being addressed or new security features being documented. The documentation emphasizes operational efficiency rather than security controls.

Diff

diff --git a/lake-formation/latest/dg/optimize-ram.md b/lake-formation/latest/dg/optimize-ram.md
index e1762774e..c5267ad98 100644
--- a//lake-formation/latest/dg/optimize-ram.md
+++ b//lake-formation/latest/dg/optimize-ram.md
@@ -75,0 +76,9 @@ The grantor needs version 4 or higher to share Data Catalog resources in hybrid
+**Version 5**
+    
+
+Cross Account Version 5 enhances cross-account resource sharing enabling you to share unlimited number of tables to another account, eliminating previous resource association limits per resource type. To get started, upgrade to cross-account version 5 through the Lake Formation console or API. Any new cross-account permission grants will automatically use wildcard patterns in the resource share instead of individual resource associations. All existing cross-account shares continue to function, and all existing Lake Formation APIs remain compatible.
+
+_Benefits from updating versions:_ Cross-account v5 enhances cross-account sharing, allowing you to share hundreds of thousands of tables across accounts.
+
+_Considerations when updating versions:_ New grants after version 5 upgrade will add wildcard resource patterns to existing AWS Resource Manager resource shares or create new shares with wildcard patterns. Once upgraded to version 5, downgrade is not supported.
+
@@ -78 +87 @@ The grantor needs version 4 or higher to share Data Catalog resources in hybrid
-New versions (version 2 and above) of cross-account grants optimally utilize AWS RAM capacity to maximize cross account usage. When you share a resource with an external AWS account or an IAM principal, Lake Formation may create a new resource share or associate the resource with an existing share. By associating with existing shares, Lake Formation reduces the number of resource share invitations a consumer needs to accept.
+New versions (version 2 and above) of cross-account grants optimally utilize AWS RAM capacity to maximize cross account usage. When you share a resource with an external AWS account or an IAM principal, Lake Formation may create a new resource share or associate the resource with an existing share. By associating with existing shares, Lake Formation reduces the number of resource share invitations a consumer needs to accept. Version 5 further optimizes RAM usage by using wildcard-based resource patterns instead of individual resource associations, thereby significantly reducing resource associations per resource share.
@@ -126 +135 @@ Console
-  1. Choose **Version 2** , **Version 3** , or **Version 4** under **Cross account version settings** on the **Data catalog settings** page. If you select **Version 1** , Lake Formation will use the default resource sharing mode. 
+  1. Choose **Version 2** , **Version 3** , **Version 4** , or **Version 5** under **Cross account version settings** on the **Data catalog settings** page. If you select **Version 1** , Lake Formation will use the default resource sharing mode. 
@@ -138 +147 @@ AWS Command Line Interface (AWS CLI)
-Use the `put-data-lake-settings` AWS CLI command to set the `CROSS_ACCOUNT_VERSION` parameter. Accepted values are 1, 2, 3, and 4.
+Use the `put-data-lake-settings` AWS CLI command to set the `CROSS_ACCOUNT_VERSION` parameter. Accepted values are 1, 2, 3, 4, and 5.