Controlling my devices from an ECHO using REST

I use an ISY hub from Universal Devices to program/control lights and various devices from an ASP.NET web application I wrote. The web app is essentially a front end which makes REST calls to the ISY.

My web-app displays a list of devices/scenes and each one has an on and off command. It’s pretty simple but it works. But I don’t have a way of associating these devices with echo. I’d like to be able to issue commands like “Alexa, turn on Family Room Lights” and have that call the appropriate REST URI.

Is openHAB the same thing as ha-bridge? Would either of these technologies allow echo to “discover” my devices/scenes so I can make these sort of calls instead of using the “Alexa trigger” type of commands?