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Bottom line is it's always best to use free software if you can, but use software you know works well and don't be afraid to fork over the $$ for premium software if it's something you intend to use regularly.
The Cloud (AKA the Internet) has become a powerful tool for organizations ranging from individuals to entire cities. Free Software developers are benefiting from the growing trend towards using the Cloud for backup and storage, online gaming, streaming media, and even creating a place to show off your favorite bands new music. While the advantages of Cloud computing in terms of cost, efficiency, and overall convenience are numerous, its important to understand the key differences between Software as a Service and other forms of Cloud computing, such as Infrastructure as a Service.
Virtual Machines (VMs) are software representations of one or more virtual computers. It is as easy as running a program to create, start, stop, and manage VMs. There are two ways in which the virtualization happens; hardware virtualization, and software virtualization. In hardware virtualization, the host operating system (also known as the hypervisor) takes the place of the physical operating system that runs on a physical computer. A physical computing machine with a hypervisor is also known as a virtual machine. While in software virtualization, a specific program, such as a web browser, a text editor or an e-mail client, is operating on a host operating system while it is being run in a separate program. Because VMs operate within a virtual operating system, they are in turn a software representation of a physical computer.