Source: forbes.com Building cloud computing clouds, just in case you hadn’t noticed, is complicated. Every time you buy a laptop or tablet from your favorite equipment manufacturer, you can pretty much be sure of the specifications, shape and power rating of the machine you have chosen from the à la carte set of product options on offer. Cloud menus are harder to navigate (and indeed to create) than that. Like a laptop, cloud computing ‘instances’ can differ by size, by