Terraform
Soon you'll be able to use secrets in terraform modules without writing them to .tfstate files.
Ansible
Use secrets in your playbooks without adding secrets to your Git repository or managing multiple vaults.
Kubernetes
Soon you'll be able to inject secrets into pods automatically.
Config files
Inject secrets with template syntax and make config files reusable across environments.
Environment variables
Pass secrets as environment variables to a process, while keeping them isolated.