Yahoo! Inc. Chief Executive Officer Marissa Mayer gave birth to identical twin daughters early this morning.

“Zack and I are excited to announce that our identical twin girls were born early this morning,” Mayer tweeted, referring to her husband, investor Zachary Bogue. “Our whole family is doing great!”

Congratulatory tweets poured in from well-wishers, including Sundar Pichai, the chief executive of Google, where Ms. Mayer used to work; Satya Nadella, the chief executive of Microsoft; Ellen Pao, the former interim chief executive of Reddit; and Frank Quattrone, a prominent investment banker.

Mayer and Bogue had their first child, a boy, in 2012, a few months after she took the helm of the biggest U.S. Web portal. The CEO’s latest additions arrived just a day after she spoke to analysts and investors on a conference call and gave press interviews to discuss a major shift in Yahoo’s business strategy.

Mayer’s decision to return to work quickly is her choice and makes sense given her role, said Barbara Yastine, co-CEO of Lebenthal Holdings LLC in New York.

Bloomberg quoted, “She has pressure on her at work, she’s facing challenges and she’s the CEO, so she’s figuring out how to handle that with the rest of her life — and that’s fabulous,” said Yastine, herself the mother of twin girls, now 11, and who went back to work soon after they were born. “When you want to do something big and different, you find a way to do it, and there’s no such thing as balance — you’re always juggling.”

According to NYT, Ms. Mayer had revealed her pregnancy in September, at a time when scrutiny of Yahoo was increasing. She came aboard Yahoo in 2012 from Google to turn around the struggling Internet company, but it remains well behind Alphabet’s Google and Facebook in online advertising and other areas.

Ms. Mayer, who has hired several people to help her care for her children both at home and when she is traveling, has said she plans to take a “limited time away” for maternity leave and will be “working throughout.”

Yahoo! offers up to eight weeks of paid leave for any Yahoo employee who has a new child, including birth, adoption, foster child placement or surrogacy. Birth mothers can get an additional eight weeks of additional paid leave.