How to use Json Syntax configuration with Terraform

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This video describes about Json input configuration using terraform
Terraform also supports an alternative syntax that is JSON-compatible. This syntax is useful when generating portions of a configuration programmatically since existing JSON libraries can be used to prepare the generated configuration files.

The JSON syntax is defined in terms of the native syntax. Everything that can be expressed in native syntax can also be expressed in JSON syntax, but some constructs are more complex to represent in JSON due to limitations of the JSON grammar.

The low-level JSON syntax, just as with the native syntax, is defined in terms of a specification called HCL. It is not necessary to know all of the details of HCL syntax or its JSON mapping in order to use Terraform, and so this page summarizes the most important differences between native and JSON syntax. If you are interested, you can find a full definition of HCL's JSON syntax in its specification.