Alphabet has replaced Google as the publicly traded company that will house Google’s search and Web advertising businesses, maps, YouTube and its “moonshot” ventures such as driverless cars.Google’s Sidewalk Labs, a company dedicated to coming up with technologies to improve urban city infrastructure such as a free WiFi program, will also be a part of the Alphabet business.The core businesses will be called Google and operate as a wholly-owned subsidiary of Alphabet. Sundar Pichai will head Google.Alphabet will be run by Google co-founder Larry Page and each of its businesses will have its own chief