Twenty years after the introduction of the theory, we revisit what it does—and doesn’t—explain. by Clayton M. Christensen, Michael E. Raynor and Rory McDonald Please enjoy this HBR Classic. Clayton M.

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including ...

With nearly two decades of retail management and project management experience, Brett Day can simplify complex traditional and Agile project management philosophies and methodologies and can explain ...

Mallory Creveling is a health and fitness writer and ACE-certified personal trainer. Her work appears across several national publications, including SELF, Prevention, Runners World, and Men's Journal ...

As a style editor, I know that the best work bag for women looks a little different for everyone. I've busily taken note of all the most popular work bags riding the subway, and what they say about ...