Amazon RDS for SQL Server Gets 18 New Trace Flags for Performance Tuning
Amazon RDS for SQL Server now supports 18 additional trace flags you can enable through parameter groups to fine-tune query optimization, memory handling, and engine behavior. These flags are available across all AWS Regions where RDS for SQL Server runs, giving you more control to optimize workload-specific performance directly in your managed environment.
source: [aws/whats-new]