Stéphane Lelux's expertise:

• Developing technical and economic models for open and shared telecommunications infrastructures (fiber co, tower co, etc.), service platforms (Local Public Data Management, IoT (Internet of Things), data centers, cloud services, etc.), and e-services (e-health, e-government, e-education, etc.)
• Managing over 100 projects in the telecommunications infrastructure and services sector
• Developing digital plans and strategic digital blueprints (metropolitan France, overseas territories, and emerging countries), particularly in the areas of high-speed and ultra-high-speed internet (fixed and mobile) and smart projects (Smart City and rural areas) innovative connected)
• engineering of public and private projects within the framework of Public Initiative Networks (PINs) in France and emerging countries (mainly Africa)
• definition of a regulatory framework conducive to the development of high and very high speed broadband
• strategic and economic analyses for investors and donors for the financing of projects in the digital infrastructure sector or territorial innovations (energy, mobility, etc.)

In 2006, he launched the "Transformation of Urban Services and Digital Networks" (Cities 2.0) program with the New Generation Internet Foundation (FING). In 2012, he founded the "Futuring Cities" foresight and R&D group with the Institut Mines Telecom – PARITECH.

Stéphane Lelux is very active in monitoring and forecasting. He is a director of the Renaissance Numérique association (a French digital think tank) and has participated in the FING's forecasting work since its creation.

He was the Founder and President of the French Association of Digital Territorial Planning Consultants (GCANT).

Since December 2019, Stéphane Lelux has chaired the international working group of the Strategic Committee for the Digital Infrastructure Sector, created at the initiative of four federations (French Telecommunications Federation, INFRANUM, AFNUM, SYCABEL) under the leadership of Minister Bruno Le Maire and Minister Agnès Pannier Runacher.

Stéphane Lelux is a recognized expert among French and European authorities, global donors (World Bank, French Development Agency, African Development Bank, etc.), Caisses des Dépôts (CDC France, CDG Maroc, etc.), private investors, investment banks (ANTIN, Cie Financière E.R., ABN AMRO, etc.), and governments in emerging countries (Africa and Asia). He is called upon as an international expert by the European Commission and also at the request of executives and regulators (FRATEL, ARCEP, etc.). He regularly speaks at association conferences and seminars (local authorities: FNCCR, AVICCA, ARF, ADF, etc.; telecommunications sector: FRATEL, ITU, Networks and Telecommunications Symposium, FTTH Council Europe, TRIP AVICCA, etc.; Smart cities and innovative territories: Innovative City Convention, Interconnected Forum, Very High Speed ​​Forum, BIM World, Digital Transformation Conference in Africa, etc.).

Furthermore, in 2017, in partnership with the French Development Agency, he founded the association Do4Africa (Digital Observer 4 Africa), which aims to support the development of innovation in Africa by setting up an exchange platform and an observatory to accelerate the sharing of good practices between countries and public/private stakeholders, including the promotion of open data for the benefit of the African continent. This platform was launched in May 2019 during the Transform Africa Summit as part of a partnership with the Smart Africa Alliance.