Definition
Total Cost of Ownership (TCO) is a method for assessing all costs of acquiring, implementing, operating, maintaining and retiring a solution over its use.
Human Explanation
TCO shows how much a solution will cost throughout its use, not only at the time of purchase.
Why it Matters
It supports comparison of alternatives and more informed long-term decisions.
Conceptual Boundary
Its result depends on scope, data and assumptions and should not be the sole decision criterion.
Practical Perspective
Use it together with risk, cash-flow and strategic assessment.