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Intro

Azure Functions​

Sometimes, this referred to FaaS (Functions as a Service).

With this we just need to focus on writing application. Help with rapid & simple development.

Azure Function = Events (Triggers) + Code

Differences with Azure Virtual Machine & Azure App Service​

Azure Virtual Machine is IaaS (Infrastructure as a Service).

-> Costly (server runs constantly), operational overhead (setup before running), patching & maintaining server, not auto-scaling.

Azure App Service is PaaS (Platform as a Service).

-> Azure Functions is built on top of web jobs SDK & hosted on App Service platform.

Events​

Example:

  • Time: run task on a regular schedule
  • Data: process message in a queue, new items in blob storage
  • Web: respond to HTTP request/web-hook

Function App​

Azure Functions group related functions together into a function app -> share configuration & local resources.