New submitter mixed_signal writes: IEEE Spectrum has an online set of articles, or "lessons," on why big IT projects have failed, including analysis of the impacts of failed systems and the life cycles of failed projects. From the summary: "To commemorate the last decade's worth of failures, we organized and analyzed the data we've collected. We cannot claim—nor can anyone, really—to have a definitive, comprehensive database of debacles. Instead, from the incidents we have chronicled, we handpicked the most interesting and illustrative examples of big IT systems and projects gone awry and created the five interactives featured here. Each reveals different emerging patterns and lessons. Dive in to see what we've found. One big takeaway: While it's impossible to say whether IT failures are more frequent now than in the past, it does seem that the aggregate consequences are worse."