What does a style guide ensure in terms of UX design?

A style guide plays a critical role in ensuring consistency across product interfaces. It serves as a comprehensive document that outlines the visual and interaction design principles for a product or brand. By providing guidelines on aspects such as typography, color schemes, iconography, and spacing, the style guide helps designers and developers maintain a unified look and feel throughout the product. This consistency is crucial for enhancing user experience, as it allows users to navigate the interface more easily and intuitively, fostering familiarity and trust.

Furthermore, a consistent design helps to reinforce brand identity, making it easier for users to recognize and engage with the product. When all design elements adhere to the same set of standards, it reduces cognitive load and improves usability, ultimately leading to a more satisfying user experience.