Cloning Master Admin User Permissions in Amazon RDS for SQL Server with Fine-Grained Control


Introduction

When you create a new Amazon RDS for SQL Server instance, the master user is provisioned with elevated privileges, allowing them to perform most administrative operations permitted within the confines of the RDS managed environment. However, AWS strongly recommends not using the master user directly in applications. Doing so violates the principle of least privilege and creates security and accountability risks. A more sustainable and secure strategy is to create a dedicated login with only the required permissions, tailored to the needs of the application, service, or user role.

This security-first approach is relevant across a wide range of