Just to say, that when I started off with Alexa and Node-RED, I used (and still do) @hardillb node-red-contrib-home-skill
https://alexa-node-red.bm.hardill.me.uk/docs
When remote2 came along - it was a more flexible and I then used it for new routines
But since the remote2 device activity issues have become more prevalent, I've invested a bit more time with Ben's solution (which has been rock-sold for a long time)
There are of course, many ways to interface with Alexa (Blueprint skills for instance) but Ben's solution is an easy way of interfacing to Alexa - I find Blueprint skills a bit more of a faff personally