If you're comfortable with using KMS already, I recommend checking out SOPS: https://github.com/mozilla/sops https://github.com/mozilla/sops It can be version

If you're comfortable with using KMS already, I recommend checking out SOPS: https://github.com/mozilla/sops https://github.com/mozilla/sops It can be versioned if you use git, access controlled via the KMS access privileges, and easily plugs into other tools because it uses YAML. Simplicity is the killer feature.