Softwr

Database & Data Management · head to head

Azure SQL vs Heroku

Azure SQL logo

Azure SQL

Database & Data Management

Intelligent, scalable cloud database service from Microsoft

From
Free
Rated
-
Full reviewWebsite
Heroku logo

Heroku

Cloud & Infrastructure

Cloud Application Platform

From
$7/month
Rated
-
Full reviewWebsite

The short version

  • Only Azure SQL has a free tier, so it costs nothing to try first.
  • Each has a real cost: Azure SQL ecosystem lock-in limits flexibility compared to open-source or multi-cloud solutions; Heroku there is no free dyno tier; the cheapest Eco dyno is $5 per month
  • They diverge on capability: Azure SQL covers Intelligent Performance, Heroku covers Git-based deployment.

Where they differ

Only the attributes on which Azure SQL and Heroku actually diverge.

Attributes where Azure SQL and Heroku differ
AttributeAzure SQLHeroku
Starting priceFree$7/month
Pricing modelUnknownsubscription
Free tierYesNo
PlatformsCloud (Microsoft Azure)Web, Api, Workers
CategoryDatabase & Data ManagementCloud & Infrastructure
Founded19752007

Identical on both: user rating (Not yet rated).

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 Heroku

  • Git-based deployment
  • Buildpacks
  • Dynos (containers)
  • Add-ons marketplace
  • Postgres database
  • Environment variables
  • Logging
  • API

Both cover

  • Web support

What people use each for

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

Azure SQL

  • Transaction processingnot Heroku
  • Data storagenot Heroku
  • Application backendnot Heroku
  • Reportingnot Heroku
  • Data analyticsnot Heroku

Heroku

  • Deploying and scaling web applications with git push and no server administrationnot Azure SQL
  • Running managed Postgres, Redis and Kafka as attached data servicesnot Azure SQL
  • Isolated production environments in a Private Space for regulated workloadsnot 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

Heroku

  • There is no free dyno tier; the cheapest Eco dyno is $5 per month
  • Eco dynos sleep after 30 minutes of inactivity, are restricted to personal accounts and allow only 2 process types
  • Free SSL and 10 process types start at the Basic dyno at $7 per month
  • Private and Shield dyno types require a Private Space, which is billed on top of the dynos
  • Private Space dynos start at $250 per month for Private-M and $500 per month for Private-L
  • Dyno prices are per dyno per month, so an app with several process types multiplies the bill

Pricing, plan by plan

Azure SQL

Free

No published plan breakdown. See the Azure SQL review.

Heroku

$7/month
  • Hobby$7/month
    • 512MB RAM
    • Shared CPU
    • 1 web dyno
  • Standard$50/month
    • 512MB RAM
    • Dedicated CPU
    • Automatic scaling

Which should you pick?

Choose Azure SQL if

  • You need intelligent performance.
  • You want to start without paying.
  • You work on Cloud (Microsoft Azure).
  • You also want advanced security.
Azure SQL review

Choose Heroku if

  • You need git-based deployment.
  • You work on Web, Api, Workers.
  • You also want buildpacks.
Heroku review

Questions people ask

Is Azure SQL or Heroku better?
Neither clearly leads. Azure SQL starts at Free and Heroku at $7/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Azure SQL or Heroku?
Azure SQL has a free tier; the other does not. Paid plans start at Free for Azure SQL and $7/month for Heroku.
Does Azure SQL or Heroku run on more platforms?
Azure SQL runs on Cloud (Microsoft Azure). Heroku runs on Web, Api, Workers.
Can I use Azure SQL for free?
Yes. Azure SQL has a free tier, so you can try it without paying. Heroku starts at $7/month.
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 Heroku is typically brought in for.
What can Azure SQL do that Heroku cannot?
Azure SQL covers Intelligent Performance, Advanced Security, Hyperscale, Serverless Compute. Heroku covers Git-based deployment, Buildpacks, Dynos (containers), Add-ons marketplace. Both handle Web support.

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
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
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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