Vault can be a centralized source of truth for secrets. It has become the defacto standard for serious secrets management imo. For example, you can have a vaul

Vault can be a centralized source of truth for secrets. It has become the defacto standard for serious secrets management imo. For example, you can have a vault with secrets and you can setup policies to unlock the vault. You could issue 10 keys, one to each person in your executive team then require a minimum of 3 of those keys to unlock the vault. You can also create things like one time use keys, or keys that expire. Or rotating keys to access secrets.