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Azure SQL Database vs PlanetScale
Short answer: Pick Azure SQL Database if you want scalable, managed SQL with AI integration; pick PlanetScale if you want sharded MySQL/Postgres with unlimited IOPS. Azure SQL Database has a free plan; PlanetScale starts at $5/month.
Which to pick
Pick Azure SQL Database if you want…
- Scalable, managed SQL with AI integration
- A free plan to start with
- Integrations with Azure Functions, Azure OpenAI or Azure AI Search (on Azure SQL Database's list, not PlanetScale's)
Pick PlanetScale if you want…
- Sharded MySQL/Postgres with unlimited IOPS
- Scalable MySQL/PostgreSQL
- Integrations with Fivetran, Airbyte or Hightouch (on PlanetScale's list, not Azure SQL Database's)
Side by side
- What it is
- Azure SQL Database:Azure SQL Database is a fully managed relational database service on Azure with scalable compute, AI features, and built-in security.
- PlanetScale:PlanetScale provides managed, horizontally-sharded MySQL, Vitess, and Postgres databases with unlimited IOPS and high-availability.
- Best for
- Azure SQL Database:Scalable, managed SQL with AI integration
- PlanetScale:Sharded MySQL/Postgres with unlimited IOPS
- Who it’s for
- Azure SQL Database:Developers and enterprises building cloud-native or AI-enhanced applications that need relational data storage.
- PlanetScale:Developers and teams needing scalable, high-performance cloud databases.
- Pricing
- Azure SQL Database:Freemium
- PlanetScale:Paid
- Starting price
- Azure SQL Database:—
- PlanetScale:$5/month (Single-node Postgres)
- Free plan or trial
- Azure SQL Database:Free trial
- PlanetScale:—
- Plans
- Azure SQL Database:—
- PlanetScale:Single-node Postgres $5 per month · PlanetScale Metal $50 per month
- Works with
- Azure SQL Database:Azure Functions, Azure OpenAI, Azure AI Search, Microsoft Fabric, GitHub Copilot
- PlanetScale:Fivetran, Airbyte, Hightouch, Datadog, Vantage, Debezium, Prometheus, pganalyze
Azure SQL Database features
- Hyperscale. Scale compute and storage independently, add up to 30 read replicas, and handle massive workloads without redesign.
- Microsoft Copilot. AI assistance for designing, operating, and optimizing SQL databases.
- AI-ready. Native support for Azure OpenAI, vector search, and semantic search to build intelligent apps.
- Data API Builder. Expose tables as REST and GraphQL endpoints for any platform or language.
- Intelligent query processing. Automatic tuning and query optimization improve performance with minimal effort.
- Security & governance. Multi-layered security, Microsoft Defender for SQL, and compliance certifications.
- Dev container templates. Pre-configured development environments for local or cloud development.
- Mirroring in Fabric. Near real-time replication of SQL data into Microsoft Fabric for analytics.
PlanetScale features
- Horizontal sharding. Vitess and Neki enable explicit sharding for MySQL and Postgres across thousands of nodes.
- Branch-per-environment. Each branch runs on its own isolated cluster for safe schema changes.
- Unlimited IOPS on NVMe. PlanetScale Metal uses blazing-fast NVMe drives with unlimited IOPS.
- High-availability clusters. One primary and two replicas across three availability zones with automated failover.
- Built-in connection pooling. PgBouncer for Postgres and similar pooling for MySQL reduce connection overhead.
- Query Insights & observability. Integrated monitoring dashboards for Vitess, Neki, and Postgres workloads.
- Database Traffic Control™. Set flexible budgets on query traffic to prevent runaway queries.
- Security & compliance. SOC 1/2, PCI DSS, HIPAA compliance with IP restrictions and private link options.
Azure SQL Database vs PlanetScale FAQ
What is the difference between Azure SQL Database and PlanetScale?+
PlanetScale focuses on MySQL/PostgreSQL with horizontal scaling, whereas Azure SQL delivers SQL Server with integrated Azure services and AI.
Should I use Azure SQL Database or PlanetScale?+
Pick Azure SQL Database if you want scalable, managed SQL with AI integration, a free plan to start with or integrations with Azure Functions, Azure OpenAI or Azure AI Search (on Azure SQL Database's list, not PlanetScale's). Pick PlanetScale if you want sharded MySQL/Postgres with unlimited IOPS, scalable MySQL/PostgreSQL or integrations with Fivetran, Airbyte or Hightouch (on PlanetScale's list, not Azure SQL Database's).
Is Azure SQL Database or PlanetScale free?+
Azure SQL Database has a free plan and paid plans. PlanetScale is paid, from $5/month (Single-node Postgres).
Do Azure SQL Database and PlanetScale integrate with the same tools?+
Their integration lists don't overlap: Azure SQL Database lists Azure Functions, Azure OpenAI, Azure AI Search, Microsoft Fabric and 1 more; PlanetScale lists Fivetran, Airbyte, Hightouch, Datadog and 8 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.