UX designers collect data about real user behavior and preferences to create user-centered and intuitive experiences, which can lead to improved customer satisfaction, increased engagement, and better overall business outcomes. Plus, they make iterative improvements to the user experience over time, keeping your product or service up-to-date, relevant and competitive. If your product or service is available on the web, mobile, and desktop, a UX designer can ensure a consistent and coherent experience across all of them. Preventing usability issues through proper UX design from the start could be more cost-effective and fast than fixing them after a product is launched.