Azure Functions vs AWS Lambda: Which is Better in 2026?
Choosing between Azure Functions and AWS Lambda comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: AWS Lambda is our overall pick for serverless workflows. Pick Azure Functions if you need cloud & infrastructure.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Azure Functions
Serverless compute for event-driven applications on Azure
Best for you if:
- • You need cloud & infrastructure features specifically
- • Azure Functions is Microsoft's serverless compute service for event-driven applications
- • It runs code in response to triggers without managing infrastructure
AWS Lambda
Run code without managing servers, pay only for compute time
Best for you if:
- • You need serverless features specifically
- • AWS Lambda lets you run code without provisioning servers-just upload your function and it scales automatically
- • It executes code in response to events from 200+ AWS services, charging only for compute time used
| At a Glance |  Azure Functions |  AWS Lambda |
|---|---|---|
Starts at | $0.2/1M executionsConsumption | $0.20/million/moPay-as-you-go |
Best For | Cloud & Infrastructure | Serverless |
Rating | - | - |
Choose Azure Functions or AWS Lambda?
Choose Azure Functions if
Serverless compute for event-driven applications on Azure
- Serverless functions
- Multiple language support
- Good Azure integration
- Your work is cloud & infrastructure-shaped, not serverless-shaped
Choose AWS Lambda if
Run code without managing servers, pay only for compute time
- Industry-standard serverless platform
- Integrates with entire AWS ecosystem
- Scales automatically to any load
- Your work is serverless-shaped, not cloud & infrastructure-shaped
| Feature | Azure Functions | AWS Lambda |
|---|---|---|
| Pricing Model | Paid | Paid |
| User Rating | ★4.4/5 204 reviews | ★4.6/5 1,079 reviews |
| Categories | Cloud & InfrastructureHosting & Deployment | ServerlessCloud & Infrastructure |
In-Depth Analysis
Azure Functions
Serverless compute for event-driven applications on Azure
Strengths
- +Serverless functions
- +Multiple language support
- +Good Azure integration
- +Consumption-based pricing
- +Durable functions
Weaknesses
- -Cold starts
- -Vendor lock-in
- -Debugging complex
- -Execution limits
- -Local development tricky
Key features
AWS Lambda
Run code without managing servers, pay only for compute time
Strengths
- +Industry-standard serverless platform
- +Integrates with entire AWS ecosystem
- +Scales automatically to any load
- +Pay only for compute time used
- +Supports many languages and runtimes
Weaknesses
- -Cold starts can affect latency
- -Complex pricing model
- -15-minute execution time limit
- -Debugging can be challenging
- -Vendor lock-in with AWS services
Key features
Pricing: Azure Functions vs AWS Lambda
| Plan | Azure Functions | AWS Lambda |
|---|---|---|
| Tier 1 | Free Tier | $0 Free Tier |
| Tier 2 | $0.2 /1M executions Consumption | $0.20/million Pay-as-you-go |
| Tier 3 | $0.4 /1M executions Flex Consumption | $0.16/million Graviton2 (ARM) |
| Tier 4 | Varies Premium | Up to 17% off Savings Plans |
Pricing verified from each vendor's public pricing page. Compare in detail on Azure Functions pricing and AWS Lambda pricing.
Who Should Use What?
On a budget?
Both are paid. Compare plans on their websites.
Go with: AWS Lambda
Want the highest-rated option?
Neither has user reviews yet.
Go with: Azure Functions
Value user reviews?
Neither has user reviews yet.
Go with: AWS Lambda
3 Questions to Help You Decide
What's your budget?
Both are paid. Pricing won't help you decide here.
What's your use case?
Azure Functions is a cloud & infrastructure tool. AWS Lambda is in serverless. Pick the category that matches your needs.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
AWS Lambda
- Higher user rating: 4.6/5 vs 4.4/5
- Larger review base (1,079 reviews)
- Our pick for this comparison
Azure Functions
- Better fit for cloud & infrastructure
The Bottom Line
AWS Lambda is our pick.
Frequently Asked Questions
Is Azure Functions or AWS Lambda better?
AWS Lambda is rated in our evaluation. Both are paid.
What are Azure Functions and AWS Lambda used for?
Azure Functions: Serverless compute for event-driven applications on Azure. AWS Lambda: Run code without managing servers, pay only for compute time.
What does Azure Functions cost vs AWS Lambda?
Azure Functions is a paid tool. AWS Lambda is a paid tool. Visit their websites for detailed pricing.