Brad Frost is a web designer and developer known for his work in the field of responsive design and design systems. He is the creator of the popular concept of Atomic Design, which helps teams build consistent and scalable user interfaces by breaking them down into smaller components. In addition to his design work, Frost is a speaker and author, sharing his insights at various conferences and through his writings. He has contributed to the web design community by providing resources and tools that help improve the design process, making it easier for designers and developers to collaborate effectively.