Sure, I said nothing to the contrary. It's a minor simplification to call it a reverse proxy. The proxy is built upon a very deep investment in infrastructure,

Sure, I said nothing to the contrary. It's a minor simplification to call it a reverse proxy. The proxy is built upon a very deep investment in infrastructure, take all of the cert signing stuff, for example. Most BeyondCorp concepts seem simple, and they are, but they depend on a lot of existing machinery, almost all of which is non-existent in pre-existing corp networks. The average tech company is currently struggling to catch up.