⚡ What is Azure Functions?
Azure Functions is a serverless compute service in Microsoft Azure that lets you run small pieces of code (called functions) without managing servers or infrastructure.
🔧 Key Features:
- Event-driven: Runs code in response to events like HTTP requests, timers, queue messages, etc.
- Serverless: Azure manages all infrastructure and scaling.
- Pay-per-use: You’re billed only for the time your code runs.
- Supports multiple languages: C#, JavaScript, Python, PowerShell, etc.
- Easily integrates with other Azure services like Blob Storage, Service Bus, Cosmos DB.
✅ Short Use Case:
A company wants to resize uploaded images automatically.
- A user uploads an image to Azure Blob Storage.
- This triggers an Azure Function.
- The function resizes the image and stores the new version in another container.
No server setup, and they only pay when the function runs.
Let me know if you want a visual diagram or difference between Azure Functions and App Service.
Yes, Azure Functions is similar to ==AWS Lambda== — both are serverless computing services offered by their respective cloud platforms.
🔁 Azure Functions vs AWS Lambda: Quick Comparison
| Feature | Azure Functions | AWS Lambda |
|---|---|---|
| Provider | Microsoft Azure | Amazon Web Services (AWS) |
| Trigger Types | HTTP, Timer, Queue, Blob, etc. | HTTP (API Gateway), S3, DynamoDB, etc. |
| Languages | C#, JavaScript, Python, Java, PowerShell, etc. | Node.js, Python, Java, Go, Ruby, .NET, etc. |
| Execution Time | Default 5 mins, extendable to 60 mins | Default 3 secs, extendable to 15 mins |
| Pricing Model | Pay-per-use (consumption or premium plans) | Pay-per-use |
| Cold Start | Possible in consumption plan | Possible in standard usage |
| Integration | Seamless with Azure ecosystem | Seamless with AWS ecosystem |
✅ Summary:
Azure Functions = AWS Lambda for Azure.
Both are great for building lightweight, event-driven, auto-scaling apps without managing servers.
Want help choosing one based on your project?