Performance metrics: Evolve or die

The performance metrics you use (both internally and externally) are probably outdated for the digital age. So, what now?

Performance metrics tend to have a religious-like importance in some industries. Specifically, one class of performance metrics will dominate an industry. For example: in retail, it's normally something like "revenue per square foot." In automobile sales, it's usually unit sales. In service industries, it might be revenue per appointment or something. E…