The global population is highly dependent on smartphones, with 86% of the world's population using them. Mobile devices account for 55% of internet traffic and dominate retail usage, making mobile a necessity for businesses to invest in a mobile-first experience. Designing a mobile experience requires considering factors such as screen size, finger errors, connectivity issues, and user comfort levels. Businesses should focus on the user's journey, goals, and motivations when optimizing their mobile website usability. Key best practices include displaying search at the top right of the mobile app or web browser, using autocomplete overlay to maximize screen real estate, providing query suggestions and product results, persisting the search query, and adapting the layout to content types. Additionally, businesses should minimize filters, display active filters in an overview, provide easy access to the current query and refinements, and avoid no-results pages by selecting a robust search engine or informing users on how to rephrase their query.