## 1.6.0 (2023-11-10)
### Features Added
- Added `WorkloadIdentityCredential`.
- When one of the credentials within `DefaultAzureCredential` is successful, it gets re-used during all subsequent attempts to get the token.
- Updated `ClientSecretCredentialOptions` and `ClientCertificateCredentialOptions` to read the default value for the authority host option from the environment variable first.
### Breaking Changes
- Add `WorkloadIdentityCredential` to the `DefaultAzureCredential`.
### Bugs Fixed
- Do not throw an exception during `AzureCliCredential` construction, but rather delay it to the `GetToken()` call.
- Harden checks for the tenant ID.
- Disallow space character when validating tenant id and scopes as input for `AzureCliCredential`.
- Add authority host url validation to reject non-HTTPS schemes.
- [[#4084]](https://github.com/Azure/azure-sdk-for-cpp/issues/4084) Remove OpenSSL dependency on Windows. (A community contribution, courtesy of _[teo-tsirpanis](https://github.com/teo-tsirpanis)_)
### Other Changes
- Add default values to some `WorkloadIdentityCredentialOptions` fields such as authority host by reading them from the environment.
- Add logging to `WorkloadIdentityCredential` to help with debugging.
- Create separate lists of characters that are allowed within tenant ids and scopes in `AzureCliCredential`.
### Acknowledgments
Thank you to our developer community members who helped to make Azure Identity better with their contributions to this release:
- Theodore Tsirpanis _([GitHub](https://github.com/teo-tsirpanis))_
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