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Amazon Aurora vs Azure Database for PostgreSQL

Amazon Aurora: AWS's MySQL- and PostgreSQL-compatible engine on a shared, six-way replicated storage layer. Azure Database for PostgreSQL: Microsoft's managed community PostgreSQL, with zone-redundant HA, DiskANN vectors and Citus elastic clusters.

key differences

  • Amazon Aurora is built for larger datasets (≤ 1 PB) than Azure Database for PostgreSQL (≤ 10 TB).
  • Only Amazon Aurora has time travel, branching.
  • Amazon Aurora has a serverless option; Azure Database for PostgreSQL does not.

choose amazon-aurora for

  • +Production MySQL or PostgreSQL backends on AWS
  • +Read-heavy web and SaaS applications
  • +Spiky or dev/test workloads on Serverless v2
  • +Cross-region disaster recovery with Global Database

best at · OLTP, Content, Metadata

choose azure-database-for-postgresql for

  • +Postgres backends for Azure-hosted apps
  • +AI copilots with vectors and relational data together
  • +Migrating Oracle or on-prem Postgres into Azure
  • +Multi-tenant SaaS using Elastic Clusters

best at · OLTP, Vector search, RAG

Amazon AuroraAWS's MySQL- and PostgreSQL-compatible engine on a shared, six-way replicated storage layer.
Azure Database for PostgreSQLMicrosoft's managed community PostgreSQL, with zone-redundant HA, DiskANN vectors and Citus elastic clusters.
overview
Primary model
Relational
Relational
Also supports
Document, Spatial, Vector
Document, Spatial, Vector, Graph
Type
Managed service
Managed service
Status
Active
Active
Developer
Amazon Web Services
Microsoft
First release
2015
2017
Latest version
–
–
License
ProprietaryProprietary (AWS service)
ProprietaryProprietary (Azure service; engine is PostgreSQL License)
Free tier
—
✓
popularity
WhichDB Score
24.9
4.9
Rank
#123
#392
GitHub stars
–
–
Stack Overflow questions
1.6K
214
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Medium (≤ 10 TB)
Horizontal scaling
Addon
Addon
Multi-region
Read replicas
Read replicas
ACID
Full
Full
Consistency
Strong, Eventual
Strong
Schema
Strict
Strict
Architecture
Shared storage, Primary replica, Serverless
Primary replica, Client server, Distributed
deployment
Self-hosted
—
—
Vendor-managed cloud
✓
✓
Serverless
✓
—
Embedded
—
—
Edge
—
—
Clouds
AWS
Azure
capabilities
Transactions
✓
✓
Joins
✓
✓
Secondary indexes
✓
✓
Full-text search
✓
✓
Vector search
✓
✓
Geospatial
✓
✓
JSON
✓
✓
Change data capture
✓
✓
Triggers
✓
✓
Stored procedures
✓
✓
Materialized views
✓
✓
TTL / expiry
—
—
Pub/Sub
✓
✓
Columnar storage
—
—
In-memory
—
—
Durable persistence
✓
✓
Compression
—
—
Encryption at rest
✓
✓
Role-based access
✓
✓
Time travel
✓
—
Branching
✓
—
Online schema changes
—
—
Streaming ingest
—
—
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
SQL, PL/pgSQL
SQL, PL/pgSQL
Client languages
Java, Python, JavaScript, Go, C#, PHP, Ruby
C#, Java, Python, JavaScript, Go, PHP, Ruby, Rust
Best for
OLTP, Content, Metadata, Vector search
OLTP, Vector search, RAG, Geo
Add more to this comparisonNot sure either fits? Try smart match

Amazon Aurora vs Azure Database for PostgreSQL: FAQ

What is the difference between Amazon Aurora and Azure Database for PostgreSQL?

Amazon Aurora: AWS's MySQL- and PostgreSQL-compatible engine on a shared, six-way replicated storage layer. Azure Database for PostgreSQL: Microsoft's managed community PostgreSQL, with zone-redundant HA, DiskANN vectors and Citus elastic clusters. Amazon Aurora is built for larger datasets (≤ 1 PB) than Azure Database for PostgreSQL (≤ 10 TB). Only Amazon Aurora has time travel, branching. Amazon Aurora has a serverless option; Azure Database for PostgreSQL does not.

When should I choose Amazon Aurora over Azure Database for PostgreSQL?

Choose Amazon Aurora for production MySQL or PostgreSQL backends on AWS; read-heavy web and SaaS applications; and spiky or dev/test workloads on Serverless v2. Choose Azure Database for PostgreSQL for postgres backends for Azure-hosted apps; AI copilots with vectors and relational data together; and migrating Oracle or on-prem Postgres into Azure.

Is Amazon Aurora or Azure Database for PostgreSQL more popular?

Amazon Aurora ranks #123 on the WhichDB Score (24.9/100) and Azure Database for PostgreSQL ranks #392 (4.9/100). Popularity is not fit: check the requirements that matter for your project.

Are Amazon Aurora and Azure Database for PostgreSQL open source?

No. Amazon Aurora is proprietary, closed-source software. No. Azure Database for PostgreSQL is proprietary, closed-source software.