Everyone who own a website wants their own particular website to appear as high as possible in the search engines, or above their nearest competitor. All sites that we design are optimised for search engines, Google in particular, as 80% of searches on the internet are powered by it, it's called Search Engine Optimisation.
Web design is not book design, it is not poster design, it is not illustration, and the highest achievements of those disciplines are not what web design aims for. Although websites can be delivery systems for games and videos, and although those delivery systems can be lovely to look at, such sites are exemplars of game design and video storytelling, not of web design. So what is web design?