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Head-to-head · Relational Databases

Microsoft SQL Server vs Azure SQL Database

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Microsoft SQL Server #4 in Relational Databases 9.1/10 Free plan Free plan✓ 3 of 4 features Visit site
Azure SQL Database #6 in Relational Databases 8.9/10 Free plan Free plan✓ 4 of 4 features Visit Azure SQL

Microsoft SQL Server leads on 1 check, Azure SQL Database on 1, and 4 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMicrosoft SQL Server · 9.1/10
  • Free planboth
  • Most featuresAzure SQL Database · 4 of 4

Microsoft SQL Server scores higher on our rubric for relational databases: 9.1 against 8.9 out of 10; our editors rank them #4 and #6.

On deployment model, Microsoft SQL Server gives you Both where Azure SQL Database offers Cloud. Azure SQL Database offers managed service; Microsoft SQL Server doesn't. Microsoft SQL Server leads on maximum connections: 32767 connections versus 30 connections.

Microsoft SQL Server is the better fit for microsoft-centered enterprise workloads. Azure SQL Database is the better fit for low-cost managed SQL Server.

  • Microsoft SQL Server fits best

    Microsoft-centered enterprise workloads

  • Azure SQL Database fits best

    Low-cost managed SQL Server

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Side by side

Feature Microsoft SQL Server 9.1/10 Visit ↗ Azure SQL Database 8.9/10 Visit ↗
At a glance
Editor score 9.1 8.9
Ranking #4 in Relational Databases #6 in Relational Databases
Best for Microsoft-centered enterprise workloads Low-cost managed SQL Server
Pricing model Free plan + paid Free plan + paid
Starting price — —
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud
Platforms Windows, Linux Web, Windows, macOS, Linux
Support Docs Docs, Community
Integrations 7 integrations 4 integrations
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Microsoft SQL Server 3/4 · Azure SQL Database 4/4
Managed service — ✓ (best)
High availability ✓ ✓
Read replicas ✓ ✓
JSON data support ✓ ✓
Specs
Deployment model Both Cloud
Backup retention Not checked yet 7 days
Maximum connections 32767 connections (best) 30 connections
Our review
Pros
  • Supports Windows, Linux, self-hosted, cloud, and hybrid deployments
  • Combines JSON, replication, full-text search, and failover capabilities
  • Includes Azure integrations, management tools, and Linux containers
  • Free offer supports up to 10 databases
  • Serverless compute, backups, failover, and replicas
  • Integrates with Azure Functions, Power BI, and Microsoft Fabric
Cons
  • The paid model requires a licensing choice across multiple plans
  • Licensing costs can vary by channel and reseller
  • Its broad feature set may exceed the needs of narrow database projects
  • Basic allows 30 maximum concurrent logins
  • Free usage is capped at 100,000 vCore seconds monthly
  • Cloud and API coverage may not suit broader deployment needs
Our verdict

Microsoft SQL Server is a relational database management system for organizations building and operating data-driven applications. Its Database Engine stores, processes, and secures data, while support for JSON data, JSON indexing,…

Read the review →

Azure SQL Database is a cloud-native relational database service built on Microsoft’s SQL Server engine. It is designed for development teams and organizations building or modernizing cloud applications on Azure. The service supports…

Read the review →
  1. Microsoft SQL ServerRelational Databases 9.1Free plan
  2. Azure SQL DatabaseRelational Databases 8.9Free plan

Strengths and trade-offs

  • Microsoft SQL Server — where it wins

    • Supports Windows, Linux, self-hosted, cloud, and hybrid deployments
    • Combines JSON, replication, full-text search, and failover capabilities
    • Includes Azure integrations, management tools, and Linux containers

    Where it doesn't

    • The paid model requires a licensing choice across multiple plans
    • Licensing costs can vary by channel and reseller
    • Its broad feature set may exceed the needs of narrow database projects

  • Azure SQL Database — where it wins

    • Free offer supports up to 10 databases
    • Serverless compute, backups, failover, and replicas
    • Integrates with Azure Functions, Power BI, and Microsoft Fabric

    Where it doesn't

    • Basic allows 30 maximum concurrent logins
    • Free usage is capped at 100,000 vCore seconds monthly
    • Cloud and API coverage may not suit broader deployment needs
  • Microsoft SQL Server9.1/10 · Free plan

    A broad Microsoft database platform for enterprise and hybrid deployments.

    Visit siteFull verdict →
  • Azure SQL Database8.9/10 · Free plan

    A low-cost managed SQL Server service with a free offer and Azure-native features.

    Visit Azure SQLFull verdict →

More comparisons

All relational databases comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update