What will happen to a Terraform output marked as sensitive?

When an output in Terraform is marked as sensitive, it means that the value of that output is treated with a higher level of privacy and security. Specifically, marking an output as sensitive prevents its value from being stored in the state file. This is crucial for maintaining confidentiality, particularly for sensitive data such as passwords, API keys, or tokens.

Instead of saving the actual sensitive value in the state file, Terraform will still track the output but will ensure that the actual sensitive data is not exposed in any way. This improves security by reducing the chances of accidental disclosure of sensitive information through the state file, which could be accessed by unauthorized individuals.

By preventing sensitive values from being stored in the state file, Terraform ensures that sensitive outputs are handled appropriately, emphasizing the importance of protecting sensitive information throughout the infrastructure lifecycle.