Epic

Epic is a piece of functionality that enables a user to achieve a clearly identified business objective. Often Epics are at the level of Elementary Business Processes‐‐‐a piece of work undertaken by one person, at one time, in one place that delivers on a specific operational objective.

Definitions

According to the Agile Extension to the BABOK Guide (preview),

Epic. A piece of functionality that enables a user to achieve a clearly identified business objective. Often Epics are at the level of Elementary Business Processes‐‐‐a piece of work undertaken by one person, at one time, in one place that delivers on a specific operational objective.