Language

Terraform files (normally with the extension .tf) are written in HashiCorp Configuration Language (HCL). It is a declarative language, meaning that you describe the desired state of the infrastructure, and Terraform will figure out how to create that state.

Basic Syntax

The main building block of HCL is the block. It is defined by a block type, a label and a body:

block_type label {
  key = "value"
}

Here:

• Values can be strings, numbers, booleans, lists or maps. They can also be references to other objects or variables.