Working with Expressions

Overview

When working with configuration files, we might need to do some computations. Expressions are used to make configuration flexible and they contain four major building blocks, which are:

• Values
• Variables
• Operators
• Functions

There are a lot of use cases for Terraform expressions, such as:

• When we need to join or concatenate values together, we can use the concat() function.

• When we need to determine the length of a value, we can use ...