What is Azure Functions?

• Event-driven, serverless compute platform that allows developers to run event-triggered code without having to explicitly provision or manage infrastructure
• Helps developers focus on writing the codes without having to take care of scaling and managing the underlying infrastructure
• Stateless, meaning they do not maintain state between executions, which makes them well-suited for handling individual tasks or responding to specific events

Key Features

• Pay-per-use pricing model (very cheap)
• Bring your own dependencies (NPM or NuGet)
• Integrated security
• Simplified integration
• Flexible development
• Open-source

How Function Apps work
Trigger(action) -> (Input) -> Code -> Output

Triggers and bindings

• Blob storage, Cosmos DB, Event Grid, Event Hubs, HTTP & webhooks, MS Graph Excel tables, Mobile Apps, Table storage., etc.

Host Configuration

• host.json metadata files contains global configuration options that affect all functions for the function app.