Photon Server CCU Question

Sorry that this question may have been answered many times, but I have searched and have not found an answer.

I'm confused on Photon Server CCU. If I plan to self-host a server using Photon Server on my own VPS, am I still limited to 20/100 CCU? Do I need a license to have more than 100 CCU even if I'm hosting on my own VPS?

Thanks.