It's an old business cliché, but true nonetheless: the only constant in business, as in life, is change. Challenges range from negotiating through mergers and acquisitions to change resulting from internal restructuring and IT implementations. External pressures also come into play, whether in the form of gearing up for new regulatory compliance measures, a changing political environment or a shift in customer demand. So how do companies ensure they're not left on the blocks in the race for competitive advantage? The answer is by becoming agile.