Events, queues & pub/sub
Amazon SQS vs Azure Service Bus / Azure Queue Storage
Amazon SQS maps to Azure Service Bus queues (feature parity, including FIFO via sessions) or Azure Queue Storage (simple, cheap queues).
Side-by-side comparison
| Aspect | Amazon Web Services | Microsoft Azure |
|---|---|---|
| Service | Amazon SQS | Azure Service Bus Azure Queue Storage |
| Lifecycle | Generally available | Generally available Generally available |
| What it is | Fully managed message queues. Standard queues are at-least-once with near-unlimited throughput. FIFO queues give ordered, exactly-once processing per message group. Dead-letter queues are supported. | Enterprise message broker with queues and topics/subscriptions. Supports sessions (FIFO), duplicate detection, transactions, dead-lettering, scheduled messages, AMQP 1.0, and JMS 2.0 (Premium). Simple, low-cost queues in a storage account. Holds millions of messages (up to 64 KB each), accessed over HTTP/HTTPS. |
| Pricing model | Per million requests (64 KB chunks), with FIFO priced higher, plus a monthly free tier and data transfer. | Service Bus Basic and Standard are billed per million operations (Standard adds a base charge). Premium is billed per messaging unit-hour. Queue Storage is billed per GB stored plus per 10,000 operations. |
| Docs | Amazon SQS docs | Azure Service Bus docs Azure Queue Storage docs |
| Pricing page | Amazon SQS pricing | Azure Service Bus pricing Azure Queue Storage pricing |
| Exams | DVA-C02 Retiring SAA-C03 | AZ-204 Retired AI-200 |
Key differences
- Ordering. SQS FIFO queues order messages per message group ID with exactly-once processing. Service Bus uses sessions for ordered, grouped processing and duplicate detection. Queue Storage has no ordering guarantees.
- Features. Service Bus adds transactions, scheduled delivery, deferral, auto-forwarding, and AMQP 1.0. SQS adds long polling, delay queues, and a visibility timeout. Both have dead-letter queues.
- Limits. SQS messages can be up to 1 MiB (larger with the extended client library and S3). Queue Storage messages are up to 64 KB. Service Bus allows 256 KB on Standard and up to 100 MB on Premium.
- Tiers. SQS has no tiers. Service Bus has Basic (queues only), Standard (topics), and Premium (dedicated capacity, VNet, larger messages).
Pricing summary
Pricing models only. No prices are quoted because they change by region and over time.
- AWS
- Per million requests (64 KB chunks), with FIFO priced higher, plus a monthly free tier and data transfer. Amazon SQS pricing →
- Azure
- Service Bus Basic and Standard are billed per million operations (Standard adds a base charge). Premium is billed per messaging unit-hour. Queue Storage is billed per GB stored plus per 10,000 operations. Azure Service Bus pricing → Azure Queue Storage pricing →
Certification exam mapping
| Exam | Provider | Level | Status |
|---|---|---|---|
| AWS Certified Developer – Associate DVA-C02 | AWS | Associate | retiring Being updated to DVA-C03. Registration for DVA-C03 opens Oct 27, 2026. Last day to take DVA-C02 is Nov 30, 2026. |
| AWS Certified Solutions Architect – Associate SAA-C03 | AWS | Associate | current Italian version retires after Dec 31, 2026. |
| Microsoft Certified – Azure Developer Associate AZ-204 | Azure | Associate | retired The certification and renewal assessment are retired (the page doesn't give a date). The closest current developer credential is AI-200 (Azure AI Cloud Developer Associate). That's our reading, not an official mapping. |
| Microsoft Certified – Azure AI Cloud Developer Associate AI-200 | Azure | Associate | current Back-end services, containers, and architecture for AI solutions on Azure. |
Relevance is based on each exam's published scope, not a line-by-line objective match. Check the official study guide.
Verification notes
- The SQS 1 MiB message size comes from the current SQS developer guide. The Service Bus per-tier message size limits come from Service Bus quota documentation, not the overview page.
FAQ
What is the Azure equivalent of Amazon SQS?
Amazon SQS maps to Azure Service Bus queues (feature parity, including FIFO via sessions) or Azure Queue Storage (simple, cheap queues).
How does pricing compare between Amazon SQS and Azure Service Bus and Azure Queue Storage?
AWS: Per million requests (64 KB chunks), with FIFO priced higher, plus a monthly free tier and data transfer. Azure: Service Bus Basic and Standard are billed per million operations (Standard adds a base charge). Premium is billed per messaging unit-hour. Queue Storage is billed per GB stored plus per 10,000 operations. Check the official pricing pages for current rates.
Which certification exams cover this topic?
AWS Certified Developer – Associate (DVA-C02) [retiring]; AWS Certified Solutions Architect – Associate (SAA-C03); Microsoft Certified – Azure Developer Associate (AZ-204) [retired]; Microsoft Certified – Azure AI Cloud Developer Associate (AI-200).