Getting "on board" with Agile

Someone asked this recently on LinkedIn:

What are some good ways in which to most quickly transition from a waterfall environment to an agile environment in such a way that (most) everyone gets on board with the transition?

My response went something like this.

By far the most common reason why development teams don’t get “on board” with Agile, in my experience, is that management isn’t on board either.

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