XC licensing question

MR_Freddy posted in the Technical Forum that they would like to understand how licensing works for XC, so I thought I'd share the post here in case one of the SMEs in this group had a better answer than 

https://www.f5.com/cloud#Security or 

https://www.f5.com/cloud/pricing

I'm not moving the original post so that the rest of the community can see the replies pointing the user to this group. 

Cheers,

Leslie