What are the cost differences between Azure SQL Database and AWS RDS for SQL Server?

Azure SQL Database (General Purpose, 4 vCores) costs approximately $370/month. AWS RDS SQL Server (db.m6i.xlarge, Standard Edition) costs approximately $640/month. Azure Hybrid Benefit allows organizations with SQL Server SA licenses to reduce costs by 30–55%, making Azure the cost leader for Microsoft-licensed enterprises.

How does AWS Babelfish enable SQL Server migration to PostgreSQL?

Babelfish for Aurora PostgreSQL allows SQL Server applications to run on Aurora PostgreSQL with minimal code changes, supporting T-SQL and SQL Server wire protocol (TDS). It enables organizations to migrate off SQL Server licensing costs while retaining existing application logic. Not all T-SQL features are supported, requiring compatibility assessment.

What high-availability options exist for managed SQL Server in the cloud?

Azure SQL Database Business Critical tier uses Always On Availability Groups with 3 replicas for 99.995% SLA. AWS RDS SQL Server Multi-AZ uses mirroring for synchronous replication. SQL Server Always On Availability Groups on EC2/Azure VMs provide maximum compatibility for applications requiring full SQL Server features.

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Best Solutions for Managed SQL Server

In-depth evaluation of the best managed SQL Server solutions, including Azure SQL Database, AWS RDS for SQL Server, Google Cloud SQL for SQL Server, and Babelfish alternatives.

Frequently Asked Questions

Azure SQL Database Hyperscale is the most advanced managed SQL Server offering, providing up to 100 TB databases, read scale-out, and rapid backup/restore. SQL Managed Instance offers near-100% SQL Server compatibility for lift-and-shift migrations including cross-database queries and SQL Agent.

Tags:managed SQL ServerAzure SQL DatabaseRDS SQL Servercloud SQL ServerSQL Server as a service