Hakuhodo DY ONE is a Japanese marketing company that uses data and technology to support digital marketing, customer experience, and business transformation. Its official site organizes its work into transformation, data and technology, and marketing communications, with support spanning strategy, data-platform development, advertising and CRM execution, measurement and improvement, and organizational or operational digital transformation. Services include CDP and CRM implementation, customer-data analysis, digital advertising, commerce, SEO and content, and AI adoption. The company also offers ONE-AIGENT, a service for applying AI agents to marketing work. Its September 2026 news covered AI search advertising and services addressing corporate change in the AI era.