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Databases · head to head

Azure SQL vs GNAT Pro

Azure SQL logo

Azure SQL

Databases

Intelligent, scalable cloud database service from Microsoft

From
Free
Free plan
Yes
Visit Azure SQLFull review
GNAT Pro logo

GNAT Pro

Developer Tools

Software development environments and toolchains for Ada, C/C++ and Rust

From
On request
Free plan
No
Visit GNAT ProFull review

The short version

  • Azure SQL is free; GNAT Pro prices on request.
  • Where Azure SQL falls short: ecosystem lock-in limits flexibility compared to open-source or multi-cloud solutions.
  • Where GNAT Pro falls short: no pricing published on website; requires contacting AdaCore directly for quotes.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which Azure SQL and GNAT Pro actually diverge.

Attributes where Azure SQL and GNAT Pro differ
AttributeAzure SQLGNAT Pro
Starting priceFreeOn request
Free tierYesNo
CategoryDatabasesDeveloper Tools

Identical on both: platforms (Web).

Not yet recorded: pricing model for Azure SQL, founded for GNAT Pro.

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Azure SQL

  • Intelligent Performance
  • Advanced Security
  • Hyperscale
  • Serverless Compute
  • Geo-replication
  • Automatic Tuning
  • Built-in AI
  • Power BI

Only in GNAT Pro

Nothing recorded that Azure SQL does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Azure SQL

  • Transaction processingnot GNAT Pro
  • Data storagenot GNAT Pro
  • Application backendnot GNAT Pro
  • Reportingnot GNAT Pro
  • Data analyticsnot GNAT Pro

GNAT Pro

  • Building certified avionics software meeting DO-178B/C standardsnot Azure SQL
  • Developing automotive embedded systems with ISO-26262 compliancenot Azure SQL
  • Integrating Ada, C/C++, and Rust components in single codebasenot Azure SQL
  • Managing software supply chain vulnerabilities and SBOMsnot Azure SQL
  • Supporting long-lived software systems spanning decadesnot Azure SQL

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Azure SQL

  • Ecosystem lock-in limits flexibility compared to open-source or multi-cloud solutions
  • Managed service reduces control over database configuration and optimization tuning
  • Pricing complexity with consumption-based model can be unpredictable at scale
  • Less operational depth compared to Amazon RDS for advanced scaling scenarios
  • Azure PostgreSQL is less compelling than dedicated PostgreSQL providers outside Azure ecosystem

GNAT Pro

  • No pricing published on website; requires contacting AdaCore directly for quotes
  • Vendor indicates per-user, per-year subscription model but does not disclose specific costs

Pricing, plan by plan

Azure SQL

Free

No published plan breakdown. See the Azure SQL review.

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Which should you pick?

Choose Azure SQL if

  • You need intelligent performance.
  • You want to start without paying.
  • You also want advanced security.
Azure SQL review

Choose GNAT Pro if

Nothing in the data separates GNAT Pro from Azure SQL on the points above - pick on price and on how each one feels to use.

GNAT Pro review

Questions people ask

Is Azure SQL or GNAT Pro better?
Neither clearly leads. Azure SQL starts at Free and GNAT Pro at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Azure SQL or GNAT Pro?
Azure SQL has a free tier; the other does not. Paid plans start at Free for Azure SQL and On request for GNAT Pro.
Does Azure SQL or GNAT Pro run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Azure SQL for free?
Yes. Azure SQL has a free tier, so you can try it without paying. GNAT Pro starts at On request.
What is Azure SQL best used for?
Azure SQL is most often used for transaction processing, data storage, application backend, reporting. Of those, transaction processing and data storage are not what GNAT Pro is typically brought in for.
What can Azure SQL do that GNAT Pro cannot?
Azure SQL covers Intelligent Performance, Advanced Security, Hyperscale, Serverless Compute.

Answered from the vendors’ own pages

Azure SQL: Does Azure SQL Database offer a free tier?

Yes, Azure SQL Database includes a permanent free tier that provides 100,000 vCore seconds, 32 GB of data storage, and 32 GB of backup storage per month. This free tier is available for the lifetime of any Azure subscription with no expiration.

Source
GNAT Pro: How much does GNAT Pro cost?

GNAT Pro pricing is not published on the website. Customers must request a pricing quote by contacting AdaCore directly or speaking with a GNAT Pro expert.

Source
Azure SQL: What pricing models does Azure SQL Database support?

Azure SQL Database offers consumption-based pricing where you pay for resources used, with no long-term commitments required. Database Savings Plans launched in March 2026 allow committing to a fixed hourly amount and save up to 35% across Azure database services.

Source
GNAT Pro: What is GNAT Pro licensing model?

GNAT Pro is sold on a per-user, per-year basis with no license locks. Customers can request pricing for their specific needs.

Source
Azure SQL: Is Azure SQL Database compatible with on-premises SQL Server?

Yes, Azure SQL Database shares the same Database Engine as on-premises SQL Server. Existing databases maintain their compatibility level and continue to work after upgrades. Azure SQL Managed Instance provides even broader SQL Server compatibility dating back to SQL Server 2008.

Source
Azure SQL: What high availability features does Azure SQL Database provide?

Azure SQL Database provides automatic backups, geo-replication for disaster recovery, failover groups for automatic failover, and zone redundancy for enhanced availability. The service maintains a 99.99% availability SLA for Business Critical tier.

Source
Azure SQL: Can I use AI features with Azure SQL Database?

Yes, Azure SQL Database includes Copilot for database tasks, Intelligent Applications support, REST API endpoints for building applications, and GraphQL endpoints for modern app development.

Source
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