Even before the agile manifesto arrived, I was learning and doing the Microsoft Solutions iterative process, which back then was ground breaking science on how to build software with rapid iterations, etc… When the agile manifesto arrived, we embraced it as something we all recognized. Over a decade later we still seem to struggle on the exact mechanics of Agile. It's important to never lose sight of the original manifesto principles.
Agile Manifesto Review
Jim Pierce
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The original review was posted on agilemenifesto.org.