Sarah Warner is a seasoned digital marketing professional with a wealth of experience in programmatic and video advertising. She began her career at GroupM, serving as the Managing Partner and Digital Investment Lead for the company. With over a decade of experience in the industry, Sarah has become an expert in media investment, digital communication strategies, and market analysis. Throughout her career, she has shown a passion for innovation and developing new approaches to advertising. Sarah's knowledge and expertise continue to make her a thought leader in the ever-evolving digital marketing landscape.