Qu’est-ce que ATOM?
Atom (or the Atom Syndication Format) is next-gen XML. Like its precursor RSS, Atom places the content and meta-data of an internet resource into a machine-parsable format, perfect for displaying, filtering, remixing, and archiving.
The key issue when syndicating data is to make sure that you don’t lose any information in the process. Apart from the document’s content itself, we’re also interested in preserving the fundamental metadata about the document too, namely:
1. What it is called
2. Who created it
3. When it was created
4. Where it is
We can know all of these things automatically–and should really keep them, but the different versions of RSS do not preserve this data by default. RSS 2.0, for example, doesn’t require a date, an author, or a URI at all.
Atom, on the other hand, is specifically designed to never lose any data… 
RELATED: What is RSS?
atom | rss | XML | weblogs | DESIGN
