Anna Wintour

Plus, it became Anna's digital laboratory, testing strategies too risky for the mothership.

Men's Vogue expanded her range.

Main Vogue only featured people Anna wanted to celebrate.

Men's Vogue could criticize.

Same brand, different roles.

But the real genius was the talent pipeline.

These magazines became Anna's farm system.

Trained editors at Teen Vogue promote them to the best Vogue.

Her influence multiplied through protégés across the industry.

The portfolio approach had another benefit, resilience.

When Men's Vogue folded in 2008, Anna shrugged.

She had other pieces on the board.

While competitors protected single titles, Anna built a portfolio that could absorb risk.

Nothing revealed Anna's approach to power more clearly than how she handled major crises.

Her response to September 11th became legendary within Condé Nast and established a template she would follow for decades.

On September 12th, 2001, while much of New York was still reeling from the 9-11 attacks, Anna went to work.

Not because she always went to work, but because she had calculated that normalcy was a form of resilience.

As the message trickled down to her staff, the best thing to do was keep going.

If Vogue stopped, fashion stopped.

If the world stopped, the terrorists would have won.