I'd recommend Twilio, it was trivial to build lambda stuff integrating to Twilio with AWS and Azure as well if you have it. I did some stuff with traffic update

I'd recommend Twilio, it was trivial to build lambda stuff integrating to Twilio with AWS and Azure as well if you have it. I did some stuff with traffic updates etc with no knowledge of cloud platforms. You also just use the Twilio UI on their site.