FORTUNE.com Names50 Most Powerful Women in Business

FORTUNE.com‘s annual list of the 50 Most Powerful Women in Business contained some familiar names in this space: Yahoo! CEO Carol Bartz, who debuted at No. 8 on the list; Facebook chief operating officer Sheryl Sandberg, who rose from No. 34 to No. 22; and Google vice president of search products and user experience Marissa Mayer, who rose from No. 50 to No. 44.

FORTUNE.com on Bartz:

The candid former CEO of Autodesk is betting on display ads, content and mobile capabilities to give the Web pioneer new life. After six months on the job, she forged a deal for Microsoft to power searches on Yahoo.com.

FORTUNE.com on Sandberg:

Facebook has grown up under Sandberg, who in her previous job built and oversaw global sales and operations at Google. Facebook works with 83 of the top 100 ad spenders in the U.S. and boasts 250 million users and counting. Facebook director Marc Andreessen has estimated that the privately held company will surpass $500 million in revenue this year.

And FORTUNE.com on Mayer, the youngest member of the list:

When she joined the startup in 1999 as the first woman engineer, Mayer gave it a 2% chance of succeeding. Now she not only directs the look and functionality of the $14 billion search engine, she’s also behind more than 100 products, like Google Earth and Google Chrome, the Internet browser and operating system that’s challenging Microsoft Windows.