05-04 Infrastructure as Code (IaC)

Last updated Aug 17, 2023 Edit Source

You write a configuration script to automate creating, updating, or destroying cloud infrastructure.

• IaC is a blueprint of your infrastructure.
• IaC allows you to easily share, version, or inventory your cloud infrastructure.

AWS has two offerings for writing Infrastructure as Code.

#aws-service

CFN is a Declarative IaC tool

Declarative Definition

• You say what you want, and the rest is filled in. Explicit
• More verbose, but zero chance of misconfiguration
• Uses scripting languages eg. JSON, YAML, XML

#aws-service

CDK is an Imperative IaC tool.

Imperative Definition

• What you see is what you get.  Implicit
• Less verbose, you could end up with misconfiguration
• Does more than Declarative
• Uses programming languages eg. Python, Ruby, JavaScript