Welcome back guest-blogger, Matt Goldner. ROI (Return on Investment) is not commonly used among librarians while it is a key issue for commercial business. This is somewhat natural given our different missions, libraries typically serve the public and businesses serve their shareholders. I have been wondering about a possible application of this same measure to libraries and where it might be applied. Commercial businesses have over the last half a decade moved more and more of their business processes up to the cloud, e.g. as Web delivered applications. Areas that might have been unthinkable to have stored and maintained offsite …