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:
YouTube Premium service as YouTube Premium, which officially took effect on June 18. The rebranding came alongside the re-launch of YouTube Music, with a separate subscription service focused solely on music (that, as before, is bundled with the larger YouTube Premium service, and also offered to Google Play Music subscribers). YouTube also announced that the price of the service would increase from US$9.99 to US$11.99 per-month for new subscribers; the existing pricing, as well as bundling of YouTube Premium benefits with Google Play Music subscriptions, is grandfathered for those who subscribed prior to the rebranding. Alongside the rebranding, the services also expanded