Agility is seen as speed and flexibility guided by strategic direction. It is also the ability to be nimble--the ability to sense changes, select predetermined alternatives, and execute effectively. The potential of agility can be significant since it can help organizations meet the individual requirements of a large and varied customer base at the lowest cost while utilizing the fewest assets. It also enhances the capability of companies to execute quickly on strategic alternatives when confronted by changes in the business environment.
Source: Managing Automation