Technical Content Writers are purist and they have a personal logic when it comes to writing documentation which oddly is not great for public consumption. lol
Documentation is written for the developer that is solving a problem: she probably already has an idea of what the solution should look like, and is hunting the details and the specifics of how Azure approaches that solution, and what is needed to make it work.
When learning, you have a completely different perspective, and often you don't have the general concepts needed to understand and navigate all the tools and objects. You may even need content that is not contained in the technical documentation because it is too general or simply doesn't belong there (and it will slow the developer down). That's what courses are for.
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