Which of the following is NOT a use case for Vault?

User account recovery is indeed not a use case for HashiCorp Vault. Vault primarily focuses on securing sensitive data through several mechanisms, including secret management, data encryption, identity and access management, and key management.

The core features of Vault revolve around its ability to provide secure storage and access to secrets, encrypt data in transit and at rest, and manage cryptographic keys effectively. It serves as a powerful tool for preventing unauthorized access to sensitive information by ensuring that only authorized entities can view or interact with secrets.

On the other hand, user account recovery typically pertains to processes involved in retrieving access to user accounts in systems rather than managing sensitive secrets or encryption keys. This function does not align with the primary objectives or features of HashiCorp Vault, which are centered more on security, access management, and encryption rather than account management or user lifecycle events.