I am a technician at Alarm Relay. We are a Central Station-to-Consumer low-cost alarm monitoring provider. We support many services, manufacturers and partners in the security industry. We are a dealer of Alarm.com. Alarm.com can be very confusing so I can understand your perplexity, as I was once questioning who or what Alarm.com's involvement was on the alarm verification process.
Alarm.com is a very solid "expansion alarm service" company. As you know, they provide all of the "Bell's & Whistles" for your security infrastructure. They are a great partner to work with, and provide excellent end-user services (i.e. Mobile Apps, Z-Wave Control, & GSM Network for Communication). They mainly achieve this by providing the Cellular communication for your alarm panel.
Alarm.com does not control who monitors you. Unlike ADT, the alarm panels that Alarm.com is compatible with is not proprietary to Alarm.com. Alarm.com (ex GE Security Brass) mainly works with a plethora of GE products, and mainly the 2GIG Go! Control.
Here at Alarm Relay, we work with and support Alarm.com's services. We are the company that monitors your home or business. One unique fact about Alarm Relay is that we are the same company that activates your Alarm.com account, walks you through the set-up of the monitoring and Alarm.com service. We also are the same outfit (and building! LOL) that monitor and notify you on alarm signals.
I hope my information has helped, we would love to earn your business @winterminute. Let me know if I can be of any further assistance.