Bouygues SA operates through several distinct business segments spanning infrastructure, energy services, media, and telecommunications. The vast majority of its revenue is generated by its construction and engineering divisions, which include Bouygues Construction for building and civil works, Colas for transport infrastructure and road construction, and Equans for multi-technical and energy services. The company also engages in real estate development through Bouygues Immobilier. Beyond its core industrial operations, Bouygues owns Bouygues Telecom, a major French mobile and fixed-line operator, and holds a controlling stake in TF1 Group, a leading broadcasting and media company in France. With operations in over 80 countries, the group leverages its diversified portfolio to maintain a strong competitive position in both public infrastructure projects and domestic consumer services.