Serverless is an architecture style where we don't have servers*, dealing just with third-party services. This means infinite scaling, less downtime and less maintenance. Of course this is not the answer for every problem, but it can be a good choice.
Together with this concept, there's Zappa, a framework that makes that easily to deploy Python WSGI applications with AWS Lambda and AWS API Gateway.
In this talk, we're going to discuss about the concept and the tool, deploying a web Python application with Zappa!
-- Kidding: Serverless still has servers ;)