In the Armoury System, changing your adventuring style—or class—is as simple as changing what you hold in your hand.
Each class is capable of performing unique actions which are learned as you gain experience and your level rises. Furthermore, achieving a certain level of mastery in multiple classes will unlock jobs, which feature even greater specialization.
Classes are suited to those who desire versatility, as they allow the use of actions that belong to other disciplines. In contrast, jobs grant access to exclusive actions and are ideal for situations that demand well-defined roles. Which fighting style you adopt is entirely up to you.
Eorzea is home to myriad disciplines─professions that adventurers can take up. So as to be better prepared to brave the wilds, all adventurers begin their journey as either a Disciple of War—a master of arms who lives for the call of battle—or a Disciple of Magic—an erudite researcher of all things esoteric.
Experienced adventurers can take up other martial classes to diversify their skills. If you seek more peaceful pursuits, you may consider becoming a Disciple of the Land—one who gathers and harvests Eorzea’s natural resources—or a Disciple of the Hand—one who uses these resources to craft wares and turn a profit.
For crafters, the art of synthesis is at the very core of their way of life, driving their industry. They employ a veritable arsenal of tools in working everything from the most delicate cloth to the most resilient metal. Through their labors, the traditions of Eorzea are kept alive, and her culture preserved.
These harvesters of nature's bounty utilize an array of tools in their work with all forms of plants and minerals. Their trade encompasses knowledge of all of Hydaelyn's natural resources, be it in a cultivated garden or the great outdoors. As a cornerstone of Eorzea's economy, their impact on her inhabitants can hardly be overstated.
Jobs refer to those martial paths that thrived in former times but have since fallen into disuse. Recent developments, however, have occasioned something of a revival in their popularity.
By achieving sufficient mastery in a certain class, adventurers will be able to begin undertaking the mantle of a related job. For instance, gladiators may rise up as paladins, stout swordsmen who shield comrades from harm; thaumaturges may aspire to become black mages, masters of offensive magic; while conjurers may find a new calling as white mages, masters of healing.
The foremost appeal of jobs is the unparalleled degree of specialization they offer. Their potential is best realized in party situations, where having well-defined roles is the key to success. There can be no doubt that jobs shine the brightest in the company of others.