Question 1

What's the difference between Azure SQL Database and Azure SQL Managed Instance?

Accepted Answer

Azure SQL Database is a fully managed database (or elastic pool) optimized for modern app patterns and simpler administration, but it doesn’t include every SQL Server instance-level feature. Azure SQL Managed Instance is closer to a full SQL Server instance experience (more compatibility with SQL Server features and migrations), while still being managed (patching, backups, high availability). Choose Database for new cloud-native apps and Managed Instance when you need higher SQL Server compatibility or easier lift-and-shift from on-prem SQL Server.

Question 2

When should I use Azure SQL?

Accepted Answer

Use Azure SQL when you want SQL Server compatibility with less database administration. It’s a good fit for web and mobile apps, SaaS products, and business applications that need a relational database with automated backups, built-in high availability, security features, and the ability to scale compute and storage. If you need full OS control or specific SQL Server configurations not supported in PaaS, consider SQL Server on Azure Virtual Machines instead.

Question 3

How much does Azure SQL cost?

Accepted Answer

Azure SQL pricing depends on the deployment option (Database vs Managed Instance), service tier (e.g., General Purpose, Business Critical, Hyperscale), compute model (vCore or DTU for some options), number of vCores, storage size, backup storage/retention, and features like zone redundancy. Costs can also change based on reserved capacity, Azure Hybrid Benefit (using existing SQL Server licenses), and serverless/auto-pause options (where available). For accurate estimates, use the Azure Pricing Calculator with your region, tier, vCores, storage, and backup retention settings.

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