Everyone knows – or at least believes – that agile methods in software development are more productive in almost every way, than classic ones (e.g. waterfall model).
Just how much more productive they are has rarely been measured – until recently. If you are using Scrum, XP, etc. or are thinking about introducing it, you will be interested in this article giving you hard facts and numbers on this topic.
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Gantthead article: Hyper-Productive Agile