Indoor hard courts typically feature a smoother surface and a more controlled environment, resulting in faster ball speeds and a consistent playing experience. In contrast, outdoor hard courts can vary significantly due to factors like weather conditions and surface texture, which often leads to slower ball speeds compared to indoor surfaces. Outdoor courts may have more grit and can be affected by elements such as humidity and wind, which can further alter the ball's behavior. Overall, players generally find that indoor hard courts provide a faster and more predictable playing surface than their outdoor counterparts.