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Comparison

AWS Lambda Functions vs Azure Functions

Compare categories, runtimes, pricing, regions, infrastructure, and platform trade-offs.

Comparison space

Updated

Platform

Hosting model
Managed
Managed
Services
Functions
Functions
Workloads
APIs
APIs
Backend Services
Backend Services
Background Workers
Background Workers
Data Processing
Data Processing
Scheduled Jobs
Scheduled Jobs
Web Applications
Web Applications
Capabilities
Compute Autoscaling
Compute Autoscaling
Deployment Rollbacks
Deployment Rollbacks
Deployment Traffic Splitting
Deployment Traffic Splitting
Preview Environments
Preview Environments
Scale to Zero
Scale to Zero
Zero-Downtime Application Deployments
Zero-Downtime Application Deployments

Development & Execution

Deployment & packaging
Docker / OCI
Docker / OCI
Kubernetes
Kubernetes
Local Emulator
Local Emulator
Serverless (Managed Runtime)
Serverless (Managed Runtime)
Runtimes
.NET Runtime
.NET Runtime
Custom Runtime
Custom Runtime
JVM
JVM
Node.js
Node.js
PowerShell
PowerShell
Languages
C#
C#
Go
Go
Java
Java
JavaScript
JavaScript
PowerShell
PowerShell
Python
Python
Ruby
Ruby
Rust
Rust
TypeScript
TypeScript
Triggers
Database Events
Database Events
Direct Invocation
Direct Invocation
Event Streams
Event Streams
HTTP Requests
HTTP Requests
Publish-Subscribe Topics
Publish-Subscribe Topics
Queue Messages
Queue Messages
Scheduled Invocation
Scheduled Invocation
Storage Events
Storage Events

Pricing

Billing basis
Resource based AWS Lambda On-Demand Usage
Resource based Azure Functions Flex Consumption
Requests / executions
  • Requests — $0.20 · per 1 million requests
  • On-demand executions — $0.40 · per 1 million executions
Compute
  • x86 execution duration — $0.0000166667 · per GB-second
Unknown
Free entry / commitment
Recurring free allowances
Recurring free allowances

Infrastructure & Availability

Infrastructure provider
  • Amazon Web Services
  • Microsoft Azure
Execution & placement
  • Execution: Single Region
  • Execution: Multi Region
  • Scope: Regional
  • Scope: Regional
Availability footprint
  • 38 Regions
Unknown

Resource & Execution Limits

Execution time
15 minutes Per invocation
Unknown
Memory
128-10,240 MB Per function
512 MB / 2,048 MB / 4,096 MB Flex Consumption; 2,048 MB default
Concurrency
1,000 Default regional account quota
Unknown
Request payload
6 MB request / 6 MB response Per invocation
210 MB Per request

Security & Compliance

Access & identity
Access Control
IAM execution roles, identity policies and resource policies
Azure RBAC, function access keys, and App Service Authentication Function app
Audit Logging
AWS CloudTrail management events Some data-event coverage requires configuration
Azure Activity Log management events Function app control plane
Encryption & secrets
Secrets Management
AWS Secrets Manager integration Separate AWS service; customer IAM configuration required
Encrypted app settings and Key Vault references Key Vault is a separate Azure service
Encryption at Rest
AWS-managed encryption; customer-managed KMS keys supported Coverage depends on Lambda data type
Encrypted settings, connection strings, and storage CMK applies to supported Blob/File resources
Network isolation & protection
Private Networking
Customer VPC access Functions still run in a Lambda-managed VPC
Private Endpoints Flex Consumption, Elastic Premium, or Dedicated
Network Isolation
Unknown
App Service app isolation Dedicated environment available through App Service Environment
Assurances & programs
FedRAMP
Class C / Class D East/West / GovCloud respectively
FedRAMP High Azure US public and Azure Government audit scope
HIPAA
HIPAA eligible Executed AWS BAA and customer controls required
Unknown