Model: External vs Internal Quality

January 31st, 2021

Model: External vs Internal Quality

internal quality is how well it meets the needs of its developers and administrators

(is it easy to understand, easy to change, etc.)


External quality is how well the system meets the needs of its customers and users

(is it functional, reliable, available, responsive, etc.)


(src: Book: Growing Object Oriented Software, Guided By Tests - Steve Freeman & Nat Pryce)