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The Impediments, and the Need for Transformation
In theory, shared-services should always outperform decentralization. But unfortunately, in practice it doesn't always do so.
Some corporate groups see their role as controlling business units, for example, limiting business units' spending on a function or forcing one-size-fits-all solutions on them inappropriately. These corporate functions may be shared, but they're a far cry from being service oriented.
As a result, business units rightfully prefer their own internal service groups, even if it costs more. At least they get the job done.
Of course, if corporate staff then demand a monopoly -- that is, force business units to buy from them "for the good of the company" -- resentment builds and the pressures for decentralization increase.
Amidst this tension, some corporations go to great lengths to remain decentralized and "patch" the problems it creates. They talk of "federated" functions; they impose "governance" in the form of committees and working groups; and they try to hold the enterprise shared-services executive accountable for things he/she cannot control.
Some corporate departments retreat to the safe territory of "common solutions" -- eg, in IT, the backbone network, computer center, and corporatewide applications -- and leave the rest to business units. This narrow vision certainly will not achieve the promise of shared services.
Ultimately, these patches are ineffective. The right answer is consolidation.
How to Go About a Shared-services Consolidation: The Tortoise Versus the Hare
One way to establish shared services is through edict. A corporate mandate may force consolidation over the objections of business-unit executives.
This may appear to be the quickest approach (the hare in the proverb), but in the long run, it rarely works. It sets up an antagonistic relationship between the shared-services organization and the internal customers it's supposed to serve. That, alone, undermines its effectiveness.
Meanwhile, it drives decentralized work underground, for example, engineers doing IT work, and administrative staff doing HR work. Eventually, the pendulum swings back to decentralization.
Perhaps worst, shifting work to an organization that's not ready to deliver great service forces business units to do without services they need. This can undermine the performance of the entire enterprise.
The best strategy is not to consolidate shared services (hoping to save money), and then find that the quality of service to business units has suffered.
A safer and more effective approach is to transform an existing shared-services function into the "supplier of choice" to the business units.