AWS Lambda vs Azure Functions: Which is Better in 2026?
Choosing between AWS Lambda and Azure Functions 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:
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
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
| At a Glance |  AWS Lambda |  Azure Functions |
|---|---|---|
Starts at | $0.16/moGraviton2 (ARM) | $0.2/1M executionsConsumption |
Best For | Serverless | Cloud & Infrastructure |
Rating | 4.6/5 | 4.4/5 |
Free plan | No | No |
Choose AWS Lambda or Azure Functions?
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
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
| Feature | AWS Lambda | Azure Functions |
|---|---|---|
| Pricing Model | Paid | Paid |
| User Rating | ★4.6/5 1,079 reviews | ★4.4/5 204 reviews |
| Categories | ServerlessCloud & Infrastructure | Cloud & InfrastructureHosting & Deployment |
In-Depth Analysis
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
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
Pricing: AWS Lambda vs Azure Functions
| Plan | AWS Lambda | Azure Functions |
|---|---|---|
| Tier 1 | $0 Free Tier | Free Tier |
| Tier 2 | $0.20/million Pay-as-you-go | $0.2 /1M executions Consumption |
| Tier 3 | $0.16/million Graviton2 (ARM) | $0.4 /1M executions Flex Consumption |
| Tier 4 | Up to 17% off Savings Plans | Varies Premium |
Pricing verified from each vendor's public pricing page. Compare in detail on AWS Lambda pricing and Azure Functions 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?
AWS Lambda: 4.6/5 (1,079 reviews). Azure Functions: 4.4/5 (204 reviews).
Go with: AWS Lambda
Value user reviews?
AWS Lambda: 1,079 reviews (4.6/5). Azure Functions: 204 reviews (4.4/5).
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?
AWS Lambda is a serverless tool. Azure Functions is in cloud & infrastructure. Pick the category that matches your needs.
How important are ratings?
AWS Lambda is rated higher: 4.6/5 vs 4.4/5.
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 AWS Lambda or Azure Functions better?
AWS Lambda is rated in our evaluation. Both are paid.
What are AWS Lambda and Azure Functions used for?
AWS Lambda: Run code without managing servers, pay only for compute time. Azure Functions: Serverless compute for event-driven applications on Azure.
What does AWS Lambda cost vs Azure Functions?
AWS Lambda is a paid tool. Azure Functions is a paid tool. Visit their websites for detailed pricing.