What is the primary purpose of a Terraform module?

• A. To group resources for reuse
• B. To define a provider
• C. To manage the backend
• D. To store state

Answer: (A)

The main idea behind a Terraform module is to package a set of related resources into a single unit so it can be reused easily. By grouping resources together, modules let you apply the same infrastructure pattern across different environments or projects without duplicating code. They can also accept input variables and return outputs, making them configurable and composable.

This is why the option describing grouping resources for reuse is the best fit. Defining a provider happens at the configuration level to connect Terraform to a cloud or service, not within a module. Managing the backend is about where Terraform stores state, which is configured outside of modules. Storing state is done in a backend, not inside a module.