Products are shown on Release Pages. These are made up of Product Formats and in the case of music products, Tracks.
Release Pages will hold all the relevant information of the release together in one place on your store. This includes release-level information such as Artist Name, Release Title, Label Name, Release Date and Artwork.
Within the Release Page you will find Product Formats, the represent the various iterations of the product available for sale.
For example, for a clothing product each different size will represent an individual Product Format. For a music product each digital format (MP3 / WAV / FLAC) will be an individual Product Format, as will each physical format.