The ATLAS web service requires an understanding of the ATDW content structure. At a high level, products are broken down into catgeories such as Accommodation, Attractions, Destination Information, etc., Each category has classifications such as Hotels, Farm Stays, Resorts, etc. Products also have attributes such as BBQ, Carpark, Wildlife or Adventure, etc. To obtain this information through the web service, please take a look at the static data api calls. The content structure is very detailed. To obtain a document containing full list of categories, classifications or attributes, please contact firstname.lastname@example.org.