Summary: An organization recognizes the value of UX and has semisystematic UX-related methodology that is widespread, but with varying degrees of effectiveness and efficiency.
Stage-4 organizations recognize the value of UX and have one or more established UX teams. Leadership usually supports UX and sometimes even incorporates it into high-level strategies and initiatives.
Design is widely understood across the organization and there is an established, iterative human-centered–design process. User research is conducted throughout the entire product lifecycle.