1 00:00:00,000 --> 00:00:11,240 In this video, I want to talk about the relation between virtualization and cloud. 2 00:00:11,240 --> 00:00:12,240 So how does it work? 3 00:00:12,240 --> 00:00:16,360 Well, a virtual machine runs on the host operating system. 4 00:00:16,360 --> 00:00:20,799 Virtual machines can also run in cloud, and that brings the benefit that they don't depend 5 00:00:20,799 --> 00:00:23,879 on one physical host, but they can run anywhere. 6 00:00:23,879 --> 00:00:29,000 A virtual machine that runs in a cloud is typically referred to as a cloud instance. 7 00:00:29,000 --> 00:00:33,799 An essential property of virtual machines running in the cloud is decoupling. 8 00:00:33,799 --> 00:00:34,799 What does that mean? 9 00:00:34,799 --> 00:00:39,720 Well, that means that while your virtual machine runs in the cloud, it doesn't depend on anything 10 00:00:39,720 --> 00:00:41,840 specific on the host platform. 11 00:00:41,840 --> 00:00:46,560 So it can be moved around, and if one host crashes, it can easily be started somewhere 12 00:00:46,560 --> 00:00:48,080 else. 13 00:00:48,080 --> 00:00:52,520 And decoupling makes it easy to deal with virtual machines in a flexible way. 14 00:00:52,520 --> 00:00:56,759 And that is why so many companies are using cloud-based software nowadays.