Larry Page using Android software and, by 2010, 17.2% of the handset market consisted of Android sales, overtaking Apple for the first time. Android became the world's most popular mobile operating system shortly afterward. Following a January 2011 announcement, Page officially became the chief executive of Google on April 4, 2011, while Schmidt stepped down to become executive chairman. By this time, Google had over $180 billion market capitalization and more than 24,000 employees. After Schmidt announced the end of his tenure as CEO on January 20, 2011, he jokingly tweeted on Twitter: "Adult-supervision no longer needed." Quartz organizational management reporter, Max
Sydney Airport Corporation traffic control, aviation communications/navigation-aids, airport fire-fighting and rescue), the Australian Customs Service, the Australian Quarantine and Inspection Service, the Australian Federal Police and the Department of Infrastructure and Transport. The company's inaugural CEO was Max Moore-Wilton , serving from 2002 until April 2006; when Moore-Wilton resigned as CEO to become Chairman of Sydney Airport Holdings. He was succeeded as CEO by former Australian Broadcasting Corporation managing director, Russell Balding. In 2011, Kerrie Mather, a senior executive with MApa trust spun out of the Macquarie Group, succeeded Balding as CEO. Sydney Airport Corporation Sydney Airport Corporation Limited (SACL) is a private