S4 Capital plc, together with its subsidiaries, operates as a digital advertising and marketing services company in the Americas, Europe, the Middle East, Africa, and the Asia Pacific. It operates through three segments: Content, Data & Digital Media, and Technology Services. The company offers contents, campaigns, and assets for paid, social, and earned media, such as digital platforms and apps, as well as brand activations. It also provides campaign management analytics, creative production and ad serving, platform and systems integration and transition, and training and education services. In addition, the company offers digital transformation services in delivering digital product design, engineering services, and delivery services. S4 Capital plc is headquartered in London, the United Kingdom.