Founding Partner, Principal Consultant

headshotWilliam Miller has proven himself as one of the premier IT Financial Management gurus. With more than 15 years of IT Financial Management experience, he brings the distinctive perspective of IT savvy combined with financial insight. Leveraging this unique set of skills, he has helped dozens of IT organizations address the fundamental challenges of demonstrating their cost drivers, showing their business value, and aligning their strategic goals. Prior to founding Proven IT Finance, William worked as IT Controller for Nationwide Insurance, overseeing the planning, forecasting, and chargeback of more than one billion dollars in annual IT spend.

Representative Accomplishments

Cost Control/Cost Reduction

Combining a well-designed cost model with unique insights into IT and its cost drivers, Miller drove IT cost reductions of $80M in a single year — without disruption in core service levels or delaying key business initiatives. In addition, through proactive management of the IT footprint, Miller kept total IT spend flat for 7 years while continuing to upgrade and update key technologies as well as delivering $2.5B in new business-transformation projects.

At Proven IT Finance, Miller helps organizations adopt these repeatable processes to revolutionize their understanding of IT cost drivers and the decisions they make.


Leveraging his executive perspective and keen understanding of how decisions need to be made in regard to IT investments, Miller has created a governance and decision-making process that enables IT and business units to collaborate in business terms to determine the right level of IT investment. Integrating disparate IT organizations into a single managed portfolio creates strategic alignment and informed decisioning previously unattainable on a large scale.

Transparency/IT Value

With his exceptional perspective that combines business understanding, financial acumen, and IT insight, Miller brings clarity to the fundamental challenges of transparency and IT value. Focusing on the concept of telling the IT story, Miller successfully translates IT’s technical success into easily understood and communicated reports that business and finance can use to make better IT investment decisions. Understanding the value IT brings to the organization drives the realization of IT as an asset, not an expense.

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