Chelcy Williams is a global B2B customer marketing leader at Mastercard, where she leads customer advocacy and recognition strategy for Mastercard Services. She built and scaled the company’s global customer advocacy capability for Mastercard Services and now leads advocacy and recognition under one strategic umbrella, positioning customer proof and prestige as powerful drivers of brand credibility, commercial relevance, and growth. Her work has elevated customer marketing from a supporting function into a strategic growth lever, powering narrative-led marketing that expands Mastercard’s story beyond payments and contributing to 23% year-over-year revenue growth in Value-Added Services, nearly 2x the growth rate of core payments. With more than 12 years of experience, Chelcy specializes in simplifying complex solutions through storytelling, engagement, and go-to-market narrative strategy. Her expertise spans customer advocacy, recognition, brand evolution, executive communications, and content marketing, bringing a strategic, results-driven approach to building trust and influencing revenue.