vioscaleAI
Comparison

AWS Lambda vs Azure Functions

On the evidence we track, AWS Lambda leads this comparison with a composite score of 76/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

AWS Lambda full profile →Azure Functions full profile →
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★AWS Lambda76
Azure Functions44
Score
vioscaleAI score
AWS Lambda76 / 100medium · 72%
Azure Functions44 / 100low · 30%
Pricing
Free tier
AWS Lambda✓
Azure Functions✓
Model
AWS Lambdacommercial
Azure Functionsfreemium
Price level
AWS Lambdalow
Azure Functionsunknown
Starting price
AWS Lambda$1
Azure Functions–
Transparent
AWS Lambda✓
Azure Functions–
Integrations
Count
AWS Lambda220
Azure Functions–
Security
Disclosure policy
AWS Lambda✓
Azure Functions–
Fedramp
AWS Lambda✓
Azure Functions–
Gdpr
AWS Lambda✓
Azure Functions✓
Hipaa
AWS Lambda✓
Azure Functions–
Iso27001
AWS Lambda✓
Azure Functions–
Pci
AWS Lambda✓
Azure Functions–
Soc2
AWS Lambda✓
Azure Functions–
Trust center
Reliability
Status page
AWS Lambda✓
Azure Functions✓
Market
Availability
AWS LambdaAvailable worldwide
Azure Functions–
Content
Faq
AWS Lambda7 items
Azure Functions5 items

Capabilities

Feature-by-feature on the axes that matter for serverless & edge platforms. “-” means undocumented, not absent.

Core
Execution substrate
AWS LambdaMicroVM
Azure Functions-
Language / runtime breadth
AWS LambdaPython, Node.js, Java, C#, Go, Ruby, custom runtimes
Azure Functions.NET, Java, Python, Node.js, and additional languages supported
Reach
Runs at global edge PoPs
AWS Lambda-
Azure Functions-
Scale
Scale to zero
AWS Lambda✓
Azure Functions-
Performance
Cold-start profile
AWS LambdaProvisioned concurrency
Azure Functions-
Limits
Max execution duration
AWS Lambda-
Azure Functions-
Integration
Event source breadth
AWS Lambda220+ AWS services including S3, DynamoDB, Kinesis, SQS, API calls, event streams
Azure Functionsevent-driven
HTTP endpoint trigger
AWS Lambda✓
Azure Functions-
Cron / scheduled invocations
AWS Lambda-
Azure Functions-
State
Durable state / workflow primitive
AWS Lambda✓
Azure Functions-
Flexibility
Bring-your-own runtime / container
AWS Lambda✓
Azure Functions-
Deployment
Hosting
AWS LambdaCloud only
Azure FunctionsCloud only
Ops
Built-in logs / metrics / tracing
AWS Lambda✓
Azure Functions✓
Extensibility
CLI + IaC / framework support
AWS Lambda✓
Azure Functions-

What each one is

The product in its own terms, so the numbers below have context.

AWS Lambda

Leader

AWS service providing serverless infrastructure for AI agents and language models, with integrated knowledge base capabilities for retrieval-augmented generation, automated data processing, and model fine-tuning.

Independently observed

Azure Functions

A cloud-based serverless compute service that executes code in response to events, supporting multiple programming languages and letting developers focus on business logic rather than infrastructure management.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

AWS Lambda

Leader
from $1/API callsUsage-based

Usage-based pricing per token and per API call; fine-tuning $0.005/image; knowledge base $0.010/page

  • Standard$1 per 1000 API calls
  • Flex-
  • Priority-
  • Reserved-
as of verify ↗

Azure Functions

Usage-based

Consumption-based pricing

as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
AWS Lambda✓
Azure Functions✓
CLI
AWS Lambda✓
Azure Functions✗
Deployment
Cloud / SaaS
AWS Lambda✓
Azure Functions✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

AWS Lambda

Leader
17 total
  • AWS S3
  • AWS DynamoDB
  • AWS Kinesis
  • AWS SQS
  • AWS EventBridge
  • Amazon MSK
  • AWS CloudWatch
  • AWS X-Ray
  • Amazon S3
  • Amazon DynamoDB
  • Amazon Kinesis
  • Apache Kafka
  • Amazon SQS
  • Amazon DynamoDB Streams
  • S3
  • SharePoint
  • Confluence
Independently observed

Azure Functions

Not documented yet.

Still deciding?

AWS Lambda or Azure Functions: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.