S4 Capital plc, together with its subsidiaries, operates as a digital advertising and marketing services company in the Americas, Europe, the Middle East, and the Asia Pacific. It operates through Assets at Scale, Platform and E-Commerce, Creative Content and Innovation, and Media Planning and Buying segments. The Assets at Scale segment creates dynamic and data-driven content for global brands. The Platform and E-Commerce segment designs and develops branded e-commerce and apps. The Creative Content and Innovation segment produces digital content and films using and adapting the latest technology and trends, such as artificial intelligence, voice, augmented reality, and virtual reality. The Media Planning and Buying segment offers campaign management analytics, creative production and ad serving, and training and education, as well as platform and systems integration and transition services. The company is based in London, the United Kingdom.