Availability, scaling & operations
Amazon RDS Blue/Green Deployments vs In-place major version upgrade (PostgreSQL)
Azure has no managed blue/green deployment for databases like Amazon RDS Blue/Green Deployments.
Azure PostgreSQL offers in-place major version upgrades, and you can build a blue/green pattern yourself with read replicas or logical replication.
Side-by-side comparison
| Aspect | Amazon Web Services | Microsoft Azure |
|---|---|---|
| Service | Amazon RDS Blue/Green Deployments | In-place major version upgrade (PostgreSQL) |
| Lifecycle | Generally available | Generally available |
| What it is | Creates a synchronized staging (green) copy of a production (blue) database for upgrades and schema changes, then switches over with built-in guardrails. Works with RDS Proxy to shorten downtime. | Upgrades a flexible server to a newer supported major version in place, keeping its name and settings, with some downtime. |
| Pricing model | You pay for the green environment's resources while it exists. | In-place upgrades are free. Any test copies are billed as normal servers. |
| Docs | Amazon RDS Blue/Green Deployments docs | In-place major version upgrade (PostgreSQL) docs |
| Pricing page | Amazon RDS Blue/Green Deployments pricing | In-place major version upgrade (PostgreSQL) pricing |
| Exams | SOA-C03 DOP-C02 | AZ-305 |
Key differences
- RDS creates and syncs the green environment, then switches over with guardrails (and works with RDS Proxy to reduce downtime). Azure's in-place upgrade keeps the server name and connection string, but involves downtime and can't be tested on a live copy first, so test on a restored copy.
Pricing summary
Pricing models only. No prices are quoted because they change by region and over time.
- AWS
- You pay for the green environment's resources while it exists. Amazon RDS Blue/Green Deployments pricing →
- Azure
- In-place upgrades are free. Any test copies are billed as normal servers. In-place major version upgrade (PostgreSQL) pricing →
Certification exam mapping
| Exam | Provider | Level | Status |
|---|---|---|---|
| AWS Certified CloudOps Engineer – Associate SOA-C03 | AWS | Associate | current Replaces AWS Certified SysOps Administrator – Associate (SOA-C02), whose last exam day was Sep 29, 2025. Simplified Chinese and Korean versions retire after Nov 19, 2026. |
| AWS Certified DevOps Engineer – Professional DOP-C02 | AWS | Professional | current Korean version retires after Dec 31, 2026. |
| Microsoft Certified – Azure Solutions Architect Expert AZ-305 | Azure | Expert | current English version updated Apr 17, 2026. |
Relevance is based on each exam's published scope, not a line-by-line objective match. Check the official study guide.
FAQ
Does Azure have an equivalent to Amazon RDS Blue/Green Deployments?
Azure has no managed blue/green deployment for databases like Amazon RDS Blue/Green Deployments. Azure PostgreSQL offers in-place major version upgrades, and you can build a blue/green pattern yourself with read replicas or logical replication.
How does pricing compare between Amazon RDS Blue/Green Deployments and In-place major version upgrade (PostgreSQL)?
AWS: You pay for the green environment's resources while it exists. Azure: In-place upgrades are free. Any test copies are billed as normal servers. Check the official pricing pages for current rates.
Which certification exams cover this topic?
AWS Certified CloudOps Engineer – Associate (SOA-C03); AWS Certified DevOps Engineer – Professional (DOP-C02); Microsoft Certified – Azure Solutions Architect Expert (AZ-305).