Video Streaming :: What Type Of Server?

What of servers are used by hosts offering packages with this type of support?

I've read that streaming can be made via web server and streaming media server. The first type has only one advantage and this is that it allows to utilize existing infrastructure, while the second type offers more effective network throughput and (what's more important for me as an end-user) allows for better video and audio quality and support of the advanced features.

Now looking at the hosting plans how do I tell which type of server is used by the host?

I'm interested in this particular plan

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