Mobile and web applications typically need a back-end server, which requires maintenance, updates, backups, and more. So why not dispense with them?
In this article, Toptal Java Developer Phillip Edwards outlines how you can use Google Firebase to develop serverless applications without incurring a lot of costs.
Serverless computing is an architecture style in which the code is executed in a cloud platform where we don’t need to worry about the hardware and software setup, security, performance, and CPU idle time costs. It's an advancement of cloud computing that goes beyond infrastructure that abstracts the software environment as well. It means no configuration is required to run the code.