I'm ignorant
How does a build trigger the serverless function to notify all of you? I kind of assume serverless means it activates on a timer or when you visit a specific URL. So a build script executes it by visiting a URL when it's finished? And the script executes from any internet connected machine?
Why is it better than having a VPS? I currently use a VPS for a few one off scripts. Cron does the timer ones and the URL ones are entries in a nginx config file. Actually that's half true I actually config an app I wrote to do it cause I didn't want to bother finding out how to do shellexecute on nginx