Many high-profile U.S. organizations have adopted the best practices described in ITIL. Companies such as Procter and Gamble, IBM, Caterpillar, Shell Oil, Boeing, and the Internal Revenue Service have all reported great success and significant operational cost savings as a direct result of ITIL adoption.
Procter and Gamble publicly attributes nearly $125 million in IT cost savings per year to the adoption of ITIL, constituting nearly 10% of their annual IT budget. Similarly, Shell Oil utilized ITIL best practices when they overhauled their global desktop PC consolidation project, encompassing 80,000 desktops. After this project was completed, they can now do software upgrades in less than 72 hours, potentially saving 6000 man-days working days and 5 million dollars.