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Data masking and performance improvements in AWS DMS 3.5.4

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AWS Database Migration Service (AWS DMS) version 3.5.4 introduces two major enhancements: data masking for enhanced security and improved data validation performance.

  • Data Masking Features:
    • Three data transformation rules: Digits Mask, Digits Randomize, and Hashing Mask
    • Enables secure handling of sensitive information during database migrations
    • Helps comply with data protection regulations like GDPR
    • Can mask columns like account numbers, phone numbers, and email addresses
  • Enhanced Data Validation Performance:
    • Uses fast partition validation technique
    • Redistributes resource usage from replication instance
    • Potentially decreases network usage
    • Available for specific migration paths like Oracle to PostgreSQL

Performance testing showed a 91% reduction in task memory usage and 95% reduction in CPU utilization compared to the previous version.



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