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Options for changing AWS KMS encryption key for Amazon RDS databases

April 13, 2026
AWS Database Blog
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In this post, we review the options for changing the AWS KMS key on your Amazon RDS database instances and on your Amazon RDS and Aurora clusters. We start with the most common approach, which is the snapshot method, and then we include additional options to consider when performing this change on production instances and clusters that can mitigate downtime.

Each of the approaches mentioned in this post can be used for cross-account or cross-Region sharing of the instance’s data while migrating it to a new AWS KMS key.

AWS Database Blog
AWS Database Blog

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