Tailoring

Definition
Tailoring is

"[t]he process by which a security control baseline is modified based on: (i) the application of scoping guidance; (ii) the specification of compensating security controls, if needed; and (iii) the specification of organization-defined parameters in the security controls via explicit assignment and selection statements."

Source

 * NIST, Recommended Security Controls for Federal Information Systems and Organizations, at B-15 (NIST SP 800-53, Rev. 3) (Aug. 2009).