Tasks are descriptions of the actual work that an individual or pair does in order to complete a story. They are manageable, doable, and trackable units of work. Typically, there are several tasks per story. Tasks have the following attributes, and all tasks must be verified complete - not just "done":

• A description of the work to be performed, in either technical or business terms
• An estimate of how much time the work will take (hours, days)
• An owner, who may or may not be pre-assigned
• An exit criteria and verification method (test or inspection)
• An indication of who will be responsible for the verification

Related links: Task