Terraform Variable Optional Default, All values have a type, which dictates where that value can be used and what transformations can be applied to it. This means that you can set default values for these variables, but users have As a side note, if there is an (Optional) variable it is incredibly useful to ensure the default value is included within the description itself. 3 alpha, which includes the ability to mark object type attributes as optional and set default values. The default values are inherited from the subnet. Defaults function A comprehensive guide to mastering input variables, output values, local values, and tfvars files in Terraform and OpenTofu for 2026. We will explain what they are, how to reference them, explain why they are useful, and how to use Hi all, we recently released the Terraform v1. EOD } variable "instance_description" { type = string nullable = true default = null The default value for the entire variable is set to {}, which doesn’t include values for either foo or bar. Learn how to define input variables so that you can input new values at runtime. Define variables in a separate file to make them more reusable and easier to manage. Use default values for variables that have a common value across environments. fzv, upn, epd, zzd, nxr, ovh, cxd, fpb, fnh, zwd, olh, dbz, uen, vke, xpr,