Database & Data Management · head to head
PlanetScale vs Azure SQL
PlanetScale
Database & Data Management
The MySQL-compatible serverless database
- From
- $15/month
- Rated
- -
Azure SQL
Database & Data Management
Intelligent, scalable cloud database service from Microsoft
- From
- Free
- Rated
- -
The short version
- Only Azure SQL has a free tier, so it costs nothing to try first.
- Each has a real cost: PlanetScale eBS High Availability requires 3-node configuration with replication overhead; Azure SQL ecosystem lock-in limits flexibility compared to open-source or multi-cloud solutions
- They diverge on capability: PlanetScale covers Database Branching, Azure SQL covers Intelligent Performance.
Where they differ
Only the attributes on which PlanetScale and Azure SQL actually diverge.
| Attribute | PlanetScale | Azure SQL |
|---|---|---|
| Starting price | $15/month | Free |
| Pricing model | subscription | Unknown |
| Free tier | No | Yes |
| Platforms | Cloud-hosted (AWS, GCP, Azure) | Cloud (Microsoft Azure) |
| Founded | 2018 | 1975 |
Identical on both: user rating (Not yet rated), category (Database & Data Management).
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 PlanetScale
- Database Branching
- Non-blocking Schema Changes
- Insights
- Horizontal Scaling
- Connection Pooling
- Query Caching
- Automatic Backups
- Global Replication
Only in Azure SQL
- Intelligent Performance
- Advanced Security
- Hyperscale
- Serverless Compute
- Geo-replication
- Automatic Tuning
- Built-in AI
- Power BI
Both cover
- Web support
What people use each for
The jobs each tool is most often brought in to do.
PlanetScale
- MySQL database hosting with automatic failover and replicationnot Azure SQL
- Vitess-based sharding for horizontal scaling across large datasetsnot Azure SQL
- Cloud provider flexibility across AWS, GCP, Azure with 60+ regionsnot Azure SQL
- Cost-effective database clusters using ARM64 architecture optionsnot Azure SQL
Azure SQL
- Transaction processingnot PlanetScale
- Data storagenot PlanetScale
- Application backendnot PlanetScale
- Reportingnot PlanetScale
- Data analyticsnot PlanetScale
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
PlanetScale
- EBS High Availability requires 3-node configuration with replication overhead
- EBS Non-HA single-node option lacks redundancy and automatic failover
- Pricing varies by cloud provider and region, requiring queries for specific rates
- ARM64 architecture only available on EBS tier, not Metal deployments
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
Pricing, plan by plan
PlanetScale
$15/monthNo published plan breakdown. See the PlanetScale review.
Azure SQL
FreeNo published plan breakdown. See the Azure SQL review.
Which should you pick?
Choose PlanetScale if
- You need database branching.
- You work on Cloud-hosted (AWS, GCP, Azure).
- You also want non-blocking schema changes.
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.
Questions people ask
- Is PlanetScale or Azure SQL better?
- Neither clearly leads. PlanetScale starts at $15/month and Azure SQL at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, PlanetScale or Azure SQL?
- Azure SQL has a free tier; the other does not. Paid plans start at $15/month for PlanetScale and Free for Azure SQL.
- Does PlanetScale or Azure SQL run on more platforms?
- PlanetScale runs on Cloud-hosted (AWS, GCP, Azure). Azure SQL runs on Cloud (Microsoft Azure).
- Can I use Azure SQL for free?
- Yes. Azure SQL has a free tier, so you can try it without paying. PlanetScale starts at $15/month.
- What is PlanetScale best used for?
- PlanetScale is most often used for mysql database hosting with automatic failover and replication, vitess-based sharding for horizontal scaling across large datasets, cloud provider flexibility across aws, gcp, azure with 60+ regions, cost-effective database clusters using arm64 architecture options. Of those, mysql database hosting with automatic failover and replication and vitess-based sharding for horizontal scaling across large datasets are not what Azure SQL is typically brought in for.
- What can PlanetScale do that Azure SQL cannot?
- PlanetScale covers Database Branching, Non-blocking Schema Changes, Insights, Horizontal Scaling. Azure SQL covers Intelligent Performance, Advanced Security, Hyperscale, Serverless Compute. 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.
SourceAzure 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.
SourceAzure 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.
SourceAzure 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.
SourceAzure 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