Code Vault
Noun · Slang & Abbreviations
Definitions
A highly protected repository, package, or storage area containing important code or configuration. In engineering slang, code vault suggests security, caution, and the fact that not everyone should have direct access.
In plain English: A protected place where important code is stored.
Example: "The signing scripts lived in a code vault with tighter review and access controls than the rest of the release tooling."