Wynter
Peep Laja is one of the strongest candidates for any world level CRO list because he helped professionalize the entire category. As the founder of CXL, Speero and Wynter, he has influenced CRO from several angles: education, experimentation, customer research and B2B messaging. His current role as founder and CEO of Wynter keeps him close to one of the most important parts of conversion work, understanding how target customers interpret positioning, value propositions and messaging. His public profile, blunt strategic writing and long connection to CXL have made him a reference point for marketers who want conversion optimization to be grounded in evidence rather than opinions.