When the first Neverwinter module, Fury of the Feywild, goes live, players will have a new 'campaign system' to explore. The campaign system will require players to work through "projects" in order to unlock new locations within the module.
How do players complete Projects and progress? The Sharandar zone itself will have many repeatable quests that give rewards which players will use in the Campaign System window. Also, players can complete solo instances and the five-man Malabog Castle to speed up progression within the Campaign System. Malabog Castle is unlocked via an early (and relatively quick) Campaign System Project before players are able to enter it. For solo instances, players can acquire a one-time use key that they can acquire while doing repeatable quests in the zone or purchase in game with a new currency that comes from the adventure zone.
Read more on the Neverwinter site.