Composition and layout refer to the arrangement and organization of visual elements within a product or interface. Composition involves the placement and balance of these elements, and layout refers to the overall structure and arrangement of the page or screen. In the context of creating great user experiences, composition and layout are important considerations that can help product teams guide the attention of their users, create a clear and logical hierarchy of information, and make it easy for users to find and use the features and content they need. Composition and layout can also help product teams create a visually appealing and cohesive design, and establish a strong brand identity and personality for their product.