Hybris provides 4 page Types. 1) Content Pages 2) Product Pages 3) Email Pages 4) Category Pages. Ref: https://wiki.hybris.com/display/accdoc50to56/Page+Templates
Also Hybris allows you to create your own Page Type. Can someone please tell me in which scenarios, custom-page-types are created? Are there any advantages in creating custom-page-type over using the existing page types provided by Hybris?