Functions

Functions are an abstraction that allow providers to expose computational logic beyond Terraform's built-in functions and simplify practitioner configurations. Provider-defined functions are supported in Terraform 1.8 and later.

Note

It is possible to add functions to an existing provider. If you do not have an existing provider, you will need to create your own provider to contain the functions. Please see Getting Started - Code Walkthrough to learn how to create your first provider.

Concepts

Learn about Terraform's concepts for provider-defined functions, such as intended purpose, example use cases, and terminology. The framework's implementation details, such as naming, are based on these concepts.

Implementation

Learn about how to implement code for a provider-defined function in the framework.

Testing

Learn about how to ensure a provider-defined function implementation works as expected via unit testing and acceptance testing.

Documentation

Learn about how to document a provider-defined function implementation so practitioners can discover and use the function.