Using a table of key-value variables with maps

So far in this book, we have studied sample code using standard variable types (string, numeric, or Boolean). However, the Terraform language has other types of variables such as lists, maps, tuples, and even more complex object variables.

Among these variable types are maps, which are represented by a collection of key-value elements and are widely used to write dynamic and scalable Terraform configurations.

Maps can have several uses, which are as follows:

• To put all the properties of a block in a Terraform resource into a single variable
• To avoid the declaration of several variables of the same type and thus put all the values of these variables in a single variable of the map type
• To have a key-value reference table of elements that will be used in the Terraform configuration

In this recipe, we will see a simple and practical case of using a map variable to dynamically define all the tags of an Azure resource...