ONE PAGE sites are the latest trend, and for good reason. They work great on mobile devices letting the reader simply swipe or scroll through all your information. This is a great option for a new or small business that does not have a lot of content to fill up a multi-page website.
Much like a full website, you can have an intro statement, slideshow, etc.. to make a nice first impression. Then the usual information like, About Us, Contact information, Photo or Video gallery, Links to social media etc… The difference being that instead of linking from one page to another the reader simply jumps or scrolls down the to that matching section. Again this performs fantastic on mobile devices, and is a better option than having a number of basically empty pages.