SNS messages


I have been reading a book set in Korea (North and South) and it talks about SNS messages. I looked it up and the first explanations have to do with a system by Amazon and Jeff Bezos. I must be missing something. Can you please explain who uses SNS and what it is?

In: Technology

It’s not referring to Amazon Web Service’s (AWS) Simple Notification Service. It means Social Network Service or “are you on social media”