differs greatly it is generally accepted that fewer than 10 carefully chosen KPIs will deliver the best results. Organizations do attempt to define benchmarks for processes and business operations. Benchmarking can be used to achieve different goals including: 1. To drive performance improvements using benchmarks as a means for setting performance targets that are met either through incremental performance improvements or transformational change. - Strategic: with a focus on a long-term horizon; and - Tactical: with a focus on the short and medium term 2. To focus an organization on becoming world class with processes that deliver the highest levels of performance that are better than those of its peer group. In the private sector The private sector has been moving towards shared services since the beginning of the 1980s. Large organizations such as the BBC, BP, Bristol Myers Squibb, Ford, GE, HP, Pfizer, Rolls-Royce, ArcelorMittal, and SAP are operating them with great success. According to the English Institute of Chartered Accountants, more than 30% of U.S. Fortune 500 companies have implemented a shared-service center, and are reporting cost savings in their general accounting functions of up to 46%. The conventional accounting practice used to generate these figures is disputed however by management thinker Professor John Seddon, who argues that the measurement known as 'unit cost' tells you nothing about overall costs. Overall costs include 'failure demand', which is defined as a failure to do something or do something right for the customer. In the public sector The public sector has taken note of the benefits derived in the private sector and continues to strive for best practice. The United States and Australia among others have had shared services in government since the late 1990s. However, the failures of these projects are increasingly being reported by the press and exposed by opposition politicians. UK The UK government under a central drive to efficiency following from the Gershon Review are working to an overall plan for realizing the benefits of shared services. The Cabinet Office has established a team specifically tasked with the role of accelerating the take up and developing the strategy for all government departments to converge and consolidate. The savings potential of this transformation in the UK Public Sector was initially estimated by the Cabinet Office at £1.4bn per annum (20% of the estimated cost of HR and Finance functions). The National Audit Office (United Kingdom) in its