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Make brands robust by empowering marketing execution capacities.

About us

We are an independent global management consultancy dedicated to making Brands more robust by facilitating their strategy expression and empowering their marketing execution capacities.
  • Excellence: the experience of our consultants and partners means we get our clients to more efficient solutions, more quickly.
  • Innovation: we invest heavily in proprietary technological solutions to make our methodology even stronger.
  • Impartiality: our business model is 100% client oriented. We take no fees from agencies which ensures we find the best solution to meet our clients needs, with no conflict of interest.



Explore the market

  • Industry state-of-the-art
  • Peer benchmarks
  • Peer-to-peer seminars organisation
  • Key players identification & mapping


Express brand strategy

  • Strategic roadmaps definition
  • Action plans structuration
  • Direction positioning
  • Internal and external narratives


Execute with the accurate resources ecosystem

  • MarCom models design
  • “Make or Buy” strategy definition
  • Agency search & selection
  • Client / Agency relationship monitoring
  • Capabilities & Resources optimization
  • Marketing management trainings


Excel via technological solutions

  • EX4 Agency Search™

Leadership team

Nicolas Gondeau
Ex4 co-founder and CEO
Nicolas spent most of his career in digital marketing and communications. He began his career at Yves Rocher Montréal as product manager. He returned to France in 2000, where he held various management positions at digital agencies such as Omnicom (Tribal DDB) and Publicis (DIGITAS LBi). In 2010, Nicolas was elected vice-president of the Association of Consulting & Communication Agencies (AACC). In 2011, he left DIGITAS to join Uniteam as associate managing director. He became a lecturer at Sciences Po Paris later that year. In 2015, he joined The Observatory International. Nicolas has a master’s degree in economics and another in Marketing and Communication. Within EX4, he will be strongly involved on agency search and selection, RFI, RFP, remuneration models definition, agency models implementation…
Nathalie Descout
Ex4 co-founder and Managing Director

Nathalie has over 20 years’ experience in the marketing and communications sector. She started her career in 2004 at the Renault Group in Spain. First, she was in charge ofconsumer intelligence. Then, she integrated the group’s Worldwide Marketing Direction, where she worked on the global advertising strategy, production, and coordination. In 2010, she joined Publicis Group as head of Renault coordination, first in South America (based in Brazil) and then at a global level (based in Paris). In 2017 she joined The Observatory International where she was the Managing Director until 2023. Nathalie speaks four languages (FR, SP, PT, EN), is a graduate of Paris Dauphine University (MSG), holds an MBA in Strategic Management (Universidad de Belgrano – Buenos Aires), is an auditor of the 79th cycle of Economic and Strategic Intelligence at IHEDN and is in the process of certification at the Ecole Polytechnique Executive Education to be a consultant in sustainable performance. Within EX4, she will be strongly involved on strategy expression, state-of-the-art, peers’ benchmarks, key players mapping, agency models definition, RFI, RFP and workshop facilitation.




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