Terraform 1.8 improves extensibility with provider-defined functions

HashiCorp has released Terraform 1.8, which introduces two new capabilities to improve extensibility and flexibility: provider-defined functions and refactoring across resource types. Provider-defined functions allow users to extend the capabilities of Terraform with custom logic and can be used in any Terraform expression. Refactoring code is now supported between resource types, making it faster and less error-prone. These features enhance the overall functionality of Terraform 1.8.