Microsoft's Azure Key Vault allows users to safeguard cryptographic keys and other secrets used by cloud apps and services. Azure Key Vault can be used to encrypt keys and small secrets like passwords that use keys stored in hardware security modules (HSMs).
The following is a quick overview of editions offered by other software in similar categories
HashiCorp offers Vault, an encryption tool of use in the management of secrets including credentials, passwords and other secrets, providing access control, audit trail, and support for multiple authentication methods. It is available open source, or under an enterprise license.
