3.1. Introduction to the Four Dimensions
💡 First Principle: The four dimensions exist because value creation is multi-faceted — neglect any one perspective and the whole effort develops a blind spot — so ITIL forces you to consider all four together rather than defaulting to whichever is most comfortable.
Why care: most service failures trace back to a neglected dimension. The team nailed the technology but forgot to train the people; the workflow was elegant but a key supplier couldn't keep up. The dimensions are a checklist against that failure. The mental model is a set of four lenses you rotate over the same product — each reveals risks the others miss.
⚠️ Common Misconception: That the dimensions are sequential steps or ranked by importance. They aren't — they apply simultaneously and equally to everything, all the time.
