Eclipse Software Sites (aka "update sites" aka "p2 repositories") are the storage format for delivering updates and new features to Eclipse-based applications.
Eclipse "software sites" are the storage format for delivering updates and new features to Eclipse-based applications. Software sites are still most commonly referred to by their old name "update site".
Technically, there are two formats for software sites:
- The "update site" format used by the former Eclipse Update Manager.
- "p2 repositories" introduced by Equinox p2
The formats are compatible, so a software site can be both an update site and a p2 repository.