Google data centers in late 2013 and began selling off the barges in 2014. Most of the software stack that Google uses on their servers was developed in-house. According to a well-known Google employee, C++, Java, Python and (more recently) Go are favored over other programming languages. For example, the back end of Gmail is written in Java and the back end of Google Search is written in C++. Google has acknowledged that Python has played an important role from the beginning, and that it continues to do so as the system grows and evolves. The software that runs the Google infrastructure includes:
Google Questions and Answers in Russia, and then China (independently mentioned on Baidu WIKI ), Thailand, Vietnam, and Indonesia, as well as 17 Arab and 40 African nations. Google targeted these nations because these nations did not have sufficient Web sites to be indexed by Google's search engine. The Q&A system is an effective way to collect useful content and then be indexed by the search engine. Technologically, Google service most closely resembles analogous services by mail.ru, [[Knowledge iN|Naver]] and [[Yahoo! Answers|Yahoo!]]. It is [[pseudonym]]ous: the [[nicknames]] of the [[authors]] of questions and answers are shown right next to their contributed content. Google uses