Google Alphabet

The word google was derived from the mathematical term googol — the numeral one followed by 100 zeros, or 10 raised to the 100th power. It was registered as a domain name by the company in 1997. Its first known use as a part of speech came just a year later, when Mr. Page appended the phrase “Have fun and keep googling!” to an email announcing new search features.
Web traffic to Alphabet.com increased by more than 5000pc following Larry Page's announcement that Google would become the largest subsidiary of a new holding company called Alphabet.
Google said that its search-related businesses, along with a few others, including Android and YouTube, would remain part of the Google subsidiary. Ventures like Nest, which makes home thermostats and alarms, and Calico, a life sciences company focused on longevity, are not Google-branded, and will be separate companies free to develop their own brands operating under the Alphabet holding company.