Azure Functions
UnclaimedServerless compute for event-driven applications on Azure
TL;DR - Azure Functions
- Azure Functions is Microsoft's serverless compute service for event-driven applications
- It runs code in response to triggers without managing infrastructure
- Free tier with 1M executions/month, then pay per execution
Pricing: Free plan available
Best for: Growing teams
Score: 86/100
Pricing Plans
free trialFree Tier
Free
Monthly free grant
- 1M executions/month
- 400,000 GB-seconds
- Consumption plan
- All features
Most Popular
Consumption
$0.2/per 1M executions
Pay-as-you-go
- $0.000016/GB-sec
- Auto-scaling
- Pay for usage only
- Cold starts possible
Flex Consumption
$0.4/per 1M executions
GA 2025
- Faster cold starts
- VNet integration
- Higher concurrency
- Always-ready option
Premium
Varies
Pre-warmed
- No cold starts
- VNET connectivity
- Unlimited execution
- Dedicated instances
About Azure Functions
Azure Functions runs your code in response to events without managing servers. HTTP requests, timer schedules, queue messages, database changes—define what triggers your function, and Azure handles the rest.
Write functions in C#, JavaScript, Python, or Java. Pay only when code executes. Scaling happens automatically based on demand.
Teams building on Azure use Functions for glue code, webhooks, and event processing where spinning up full services would be overkill.
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Azure Functions FAQ
Generous free tier: 1 million executions and 400,000 GB-s per month. Consumption plan charges only for usage. Many apps run free.
Azure Functions is Microsoft's serverless compute platform. Run code triggered by events without managing servers. Similar to AWS Lambda.
Similar capabilities. Azure Functions has better C#/.NET support. Lambda has more triggers and ecosystem. Choose based on your cloud platform.
C#, JavaScript, TypeScript, Python, Java, PowerShell, and custom handlers. C# has the best integration as expected from Microsoft.
HTTP requests, timers, queues, blobs, Cosmos DB changes, Event Grid, and more. Build event-driven applications. Good integration with Azure services.