What is IaC?

• Infrastructure as a code
• Automate creation update or destroying cloud infra
• Allows to share, version infrastructure

Manually is faster (the first time) but

• Can be configured wrong
• Difficult to transmit config knowledge

Some IaC tools

• Two categories
• Declarative
  • Explicit
  • Scripting language JSON YAML HCL etc
  • ARM Templates and Azure Blueprints (Azure)
  • CloudFormation (AWS)
  • Cloud Deployment Manager (Google)
  • Terraforms (Multi)
• Imperative
  • Implicite (Say what you want the rest is filled in)
  • Less Verbose (easy to misconfigure)
  • Can do more
  • Programming languages Python, go, etc.
  • AWS CDK
  • Pulumi(Multi)

Terraform sits kind of in the middle of the two because even tough is based on HCL, it supports loops, dynamic blocks, variables and complex data structures like maps