Strategy by EY-Parthenon

In today’s fast-paced world, C-suite and business leaders must truly be effective at driving value creation across their organization.

EY-Parthenon is a transformative strategy and transactions consultancy that provides real-world value: solutions that work in practice not just on paper.

Setting and executing a strategy to create and optimize value for all stakeholders has never been more challenging. CEOs need to consider and take bold and transformative steps such as setting strategic directives in light of radically shifting customer and market dynamics, leading disruptive innovation in their sector, pursuing and optimizing inorganic growth strategies, defining and implementing organic growth strategies and embedding sustainability into their business model.

With more than 25,000+ strategy professionals in more than 150 countries, we have reimagined strategy to work in an increasingly complex world. EY-Parthenon professionals continually answer the “What?” and the “How?” questions on the CEO agenda to help achieve their strategic objectives and shape their future with confidence. 

Featured Thinking

Top 10 geopolitical developments in 2026

Oliver Jones 11 Dec 2025

Explore EY-Parthenon Solutions

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Featured

Geostrategic Analysis: December 2025 edition

Our latest thinking

How do CEOs reimagine enterprises for a future that keeps rewriting itself?

EY-Parthenon CEO Outlook 2026 explores how leaders use AI, transformation and portfolio strategy to navigate uncertainty and drive sustainable growth.

Andrea Guerzoni + 2

How to optimize your global strategy amid asymmetric globalization

Exploring future scenarios reveals divergent paths for geopolitics, economic policies, sector trajectories and company strategies. Learn more.

Oliver Jones + 1

How can reimagining risk prepare you for an unpredictable world?

The 2025 EY Global Risk Transformation Study explores how Risk Strategists see disruption earlier, adapt faster and respond with more precision.

Scott McCowan + 2

Sustainable Aviation Fuels: Paving the way for greener skies

Discover how sustainable aviation fuel (SAF) is revolutionizing air travel and reducing carbon emissions. Learn more about the future of green aviation.

Daniel Eisenhuth + 1

Rivada is reimagining wireless internet as a commodity

By leveraging AI and automation, patient diagnostics have picked up pace in a health care testing company. Learn more in this case study.

Transact to transform: How a human focus can unlock deal value

Transactions which have a bold vision, prioritize the workforce and set conditions to navigate hurdles are more likely to transform a business. Learn more.

Liz Fealy + 2

How a top-down holistic strategy can maximize GenAI ROI

Explore how companies that put strategy first by applying a holistic Generative AI maturity model for AI adoption will be positioned to unlock greater ROI.

Behnaz Saboonchi

Our EY-Parthenon team

John van Rossen

EY-Parthenon Global Strategy and Execution Leader

Driven by purpose and motivated to always help colleagues and clients find a better way of doing things. Fascinated by military history. Podcast addict. Curious nerd.

London, United Kingdom

Andrea Guerzoni

EY Global Vice Chair | EY-Parthenon Global Leader - Strategy and Transactions

Advising Boards and CEOs on transformational deals from strategy through to execution. Global Leader of Strategy and Transactions service line. Innovator and team player.

Chris Librizzi

EY-Parthenon Americas Strategy Leader

Focused on what it takes for our work to drive lasting change. Believer in the power of diverse and inclusive cultures. Advisor to education leaders reshaping their organizations. Husband and father.

New York, NY, United States

Nadine Mirchandani

EY Global Deputy Vice Chair; EY-Parthenon Global Deputy Leader, Strategy and Transactions

Over 20 years of experience in leading financial services, corporate and private equity transactions. Advisor to both sell- and buy-side.

New York, NY, United States

Mitch Berlin

EY Americas Vice Chair, EY-Parthenon

Dedicated to finding and capturing the most value from every transaction. Passionate advocate for diversity and inclusiveness as the cornerstones of successful teams and businesses.

New York, NY, United States

Constantin M. Gall

EY-Parthenon Europe West Managing Partner; EY Global Aerospace Defense & Mobility Practice Leader

Decades in transactions, corporate finance, strategy and global management. Transformation driver. Entrepreneurial spirit. Passionate about mobility, innovation, travel and exploring new cultures.

Stuttgart, Germany

Shannon Cotter

EY-Parthenon Asia Pacific and Oceania Leader

Driver of generational investment and change in infrastructure. Advocate for diverse teams. Mentor to women. Critical thinker. Intrepid traveler.

Sydney, Australia

EY Global

Multidisciplinary professional services organization

Industry Strategy

EY-Parthenon sector strategy consulting teams have deep sector strategy experience and can help your business challenge the status quo. Learn more.
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EY-Parthenon Geostrategic Business Group

The Geostrategic Business Group can help translate geopolitical insights into business strategy to help manage political risk. Find out how.
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EY-Parthenon Edge Platforms: AI-powered Tech for Strategy and M&A

Discover EY-Parthenon’s AI-powered deal technology platforms that drive real-world results across strategy, transactions and transformation.
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Transactions and Corporate Finance by EY-Parthenon

Featured: Transact to transform: How a human focus can unlock deal value

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EY refers to the global organization, and may refer to one or more, of the member firms of Ernst & Young Global Limited, each of which is a separate legal entity. Ernst & Young Global Limited, a UK company limited by guarantee, does not provide services to clients. For more information about our organization, please visit ey.com.

EY-Parthenon is a brand under which a number of EY member firms across the globe provide strategy consulting services.