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Azure, in particular, extends upon what we can do.

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I think Microsoft attempts to make up for the fact that when

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you're doing software‑defined networking in Azure,

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you're not going to be able to touch the hardware or get the

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degree of depth that you are necessarily on‑premises when you

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can walk into your server closets, where you can walk into switch closets,

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you can actually feel the cables and the

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terminations and all of that kind of stuff.

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In the Azure portal for your Azure VMs,

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you can inspect at the network‑interface level the routing table for each VM.

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And this has an advantage.

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Again, we don't need to get too far into the weeds here,

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but we have an advantage of integration with all of Azure Resource Manager.

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This particular route table, you can see the next hop type,

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there are these friendly labels called service tags.

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So instead of having next hop being a single,

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discrete IP address, like a default gateway address,

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you can be much more expansive.

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So there's in this example,

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the bottom two options are saying if we're trying to

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get to any of those IP ranges, go through a VirtualNetworkServiceEndpoint.

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So these service tags provide a way to notate potentially a

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lot of addresses with a single label.

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We see these service tags manifested throughout the Azure networking stack. I'll show you more about this effective route stuff in the demo.