Cirrus cloud spreading from the top of a dying cumulonimbus. Cirrus forms from tropical cyclones, and is commonly seen fanning out from the eyewalls of hurricanes. A large shield of cirrus and cirrostratus typically accompanies the high altitude outflow of hurricanes or typhoons, and these can make the underlying rain bands—and sometimes even the eye—difficult to detect in satellite photographs. Thunderstorms can form dense cirrus at their tops. As the cumulonimbus cloud in a thunderstorm grows vertically, the liquid water droplets freeze when the air temperature reaches the freezing point. The anvil cloud takes its shape because the temperature inversion at the
UK Government G-Cloud COO of GDS, took over as director of G-Cloud. A new version of the G-Cloud framework is normally released about every 6 to 9 months. G-Cloud version 9 went live in May 2017; as of November 2017, the release date for version 10 had not been finalised. G-Cloud had several calls for contract to establish framework agreements. Major US vendors Amazon Web Services (AWS) and Google were initially excluded by the UK government in 2012 (G-Cloud 3) but AWS has since been added in 2013 (G-Cloud 4). Following hints by the head of the programme, GDS chief operating officer Tony