PwC

One of the 'Big Four' global professional services firms; a leading independent auditor and advisor in digital advertising, media measurement, and AdTech compliance

PricewaterhouseCoopers (PwC) is a multinational professional services network headquartered in London, United Kingdom, and one of the 'Big Four' accounting and consulting firms globally. With operations in over 150 countries and more than 364,000 employees, PwC provides audit and assurance, tax, consulting, and advisory services to a wide range of industries including media, technology, and advertising. Within the AdTech ecosystem, PwC plays a significant role through its media and entertainment consulting practice, digital transformation advisory, and its involvement in industry measurement standards. PwC has established itself as a key player in advertising accountability and transparency, most notably through its role as a third-party auditor for the Interactive Advertising Bureau (IAB) and its work auditing digital advertising metrics for major platforms including Google, Facebook, and others. The firm also conducts the widely cited Global Entertainment & Media Outlook report, which provides authoritative forecasts on advertising spend, digital media trends, and consumer behavior across global markets. In the AdTech space, PwC advises brands, agencies, publishers, and technology companies on media investment strategy, programmatic transparency, data governance, privacy compliance (GDPR, CCPA), and marketing technology stack optimization. Its consulting arm helps enterprises navigate complex AdTech ecosystems, evaluate vendor relationships, and implement measurement frameworks. PwC's credibility as an independent auditor and its deep industry relationships make it a trusted advisor for companies seeking to validate advertising effectiveness and ensure regulatory compliance.