O O2 Archive is the service for secured data storage with guaranteed persistence time called retention class similar to open source solutions such as OwnCloud or Dropbox. It is used to store important documents of companies (law firms, schools, medical facilities, …) that have to be backed up for some time.
Telefonica O2 bought the hardware equipment – Hitachi storage including software API and administration. The goal was to develop middleware communicating with Hitachi storage and providing REST API for the web portal, iOS and Android mobile applications and the Windows desktop application.