Serverless computing, or more simply Serverless, is a hot topic in the software architecture world. The “Big Three” cloud vendors—Amazon, Google, and Microsoft—are heavily invested in Serverless, and we’ve seen plenty of books, open-source projects, conferences, and software vendors dedicated to the subject. But what is Serverless, and why is (or isn’t) it worth considering? In this article I hope to enlighten you a little on these questions.

To start we'll look at the “what” of Serverless. We’ll get into the benefits and drawbacks of the approach later.

https://martinfowler.com/articles/serverless.html