Their survival depends on their becoming lean, mean, gritty -- and, in particular, Web and software savvy.

FORBES: Digital rules

He quit his job as director of the business-to-business segment at e-commerce software maker Open Market to launch PurchasingCenter, warning his wife to expect lean months with no salary.

FORBES: Survivor

The largest, and most fully developed, body of management expertise for dealing with complexity lies elsewhere, in software development with the practices known variously as Agile, Scrum, Kanban, Lean and Extreme Programming.

FORBES: Can Complexity Thinking Fix Capitalism?