Uber officially has a new CEO in Dara Khosrowshahi, Uber’s board announced Tuesday night.

Khosrowshahi, the former CEO of Expedia, accepted the position Tuesday after Uber’s board selected him on Sunday.

The board announced the new CEO in a memo to employees that Uber published on its website.

Uber’s board – which includes Travis Kalanick, its CEO who was ousted in June – wrote in the memo that it unanimously voted for Khosrowshahi to take the helm of the ride-hailing giant.

Here’s the full memo, which was signed by Kalanick; Uber cofounder Garrett Camp; Yasir Al Rumayyan, the CEO of of Saudi Arabia’s Public Investment Fund; Matt Cohler of Benchmark, an Uber investor; Ryan Graves, a former Uber exec; Arianna Huffington; Wan Ling Martello, Nestle’s former chief financial officer; and TPG Capital’s David Trujillo:

Team,

We are delighted to announce that Uber's Board has voted unanimously to appoint Dara Khosrowshahi to be our new CEO.

Dara came to America at nine years old when his family escaped Iran on the eve of the Iranian Revolution. He grew up in Tarrytown, N.Y., trained as an engineer at Brown, and spent many years at IAC serving as Chief Financial Officer and in various operational and strategic roles.

In 2005, he became CEO of Expedia, which he built into one of the world's leading travel and technology companies, now operating in more than 60 countries. He has four children and not surprisingly loves to travel, one of his favorite trips being to the Angkor Wat temples in Cambodia where his wife Sydney said yes to marrying him.

We're really fortunate to gain a leader with Dara's experience, talent and vision. The Board and the Executive Leadership Team are confident that Dara is the best person to lead Uber into the future building world-class products, transforming cities, and adding value to the lives of drivers and riders around the world while continuously improving our culture and making Uber the best place to work.

Dara will be joining us tomorrow, August 30, for an All Hands. Add your questions for Dara here, and stay tuned for a calendar invite with more details. He'll also be meeting with employees around the world in smaller groups over the next few weeks, and spending time with drivers.

Please join us in welcoming Dara on what promises to be an exciting ride!

- Yasir, Garrett, Matt, Ryan, Arianna, Travis, Wan Ling & David