Alexa - overview of possible integrations?

Hi there,

I’d like to integrate an Amazon Dot with Openhab2 - however, there are so many different posts, skills and possible methods, that I’m not sure where to start.

What I found is a) integration via myopenhab b) integration via direct access to the local openhab c) integration via hue emulator.

Is this correct? What are the benefits of each of these options or are there any limitations?
Especially having the devices distributed in various cloud apps is something I want to minimize…