Baseline configuration

Definition
Baseline configuration is

"[a] set of specifications for a system, or CI within a system, that has been formally reviewed and agreed on at a point in time, and which can be changed only through change control procedures. The baseline configuration is used as a basis for future builds, releases, and/or changes. NIST, Guide for Security Configuration Management of Information Systems 43 (NIST Special Publication 800-128, Initial Public Draft) (Mar. 2010) (full-text)."