Controlling Crestron system from the web?

Hi all, I haven't been keeping up with Crestron stuff for the last 4-5 years and am trying to catch up.

I think our requirements are fairly simple: We have several lecture rooms with CP3Ns to control projectors, TVs, video matrixes, etc... how can I connect a web interface to this system to control it? I've been reading about the Crestron HTML5 UI stuff but I'm having a hard time figuring out what kind of hardware or license changes we might need to implement this.

Our team is already proficient with Vue.js and web programming, ideally this is the route we would go.

I found the resource below which I think might be a good starting point, but I don't understand the hardware / licensing requirements.

https://github.com/jeffderek/crestron-vue-simpl-example

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