We all know that modules are in our future. ECMAScript. Next modules (aka “Harmony” modules) will start appearing in browsers in early 2012. Too bad Harmony modules won’t be universal 2021 when IE9 will finally be dead... But there's no need to wait! AMD and CommonJS Modules/1.1 are fully supported in a wide variety of environments already. But why are there two standards? Which one should I pick?

John Hann from lifeImage takes a quick look at each of the formats, compares and contrasts their features, discusses the benefits of using modules now, and draws some conclusions.

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