To build on Rick’s architecture: You can install a FusionHub Solo (free) on a cloud server (there are lots of offers out here - $5/month will get you there) and then set up a PepVPN connection between the FusionHub and your on-site router. That way you get the fixed-ip access (to the FusionHub instance) you (may) want. Then (with judicious use of port forwarding and/or mapping) all your users can access your camera through the FusionHub IP address.
The main cost is the added complexity of two routers (Fusionhub + the on-site router) + $5/month for the virtual instance + whatever arm&leg Verizon charges for your bandwidth.
See the thread FusionHub and Cloud Platform integration (AWS, Azure, Google Cloud) for example set-ups.