What is meant by backend as a service?

The backend apps are hosted on remote servers . As already said, frontend apps communicate with backend servers through the internet, exchanging the data in formats likes JSON shown above. It happens that one server handles many frontend applications, as well as many users, at the same time.

Backend-as-a-Service (BaaS) is a cloud service model in which developers outsource all the behind-the-scenes aspects of a web or mobile application so that they only have to write and maintain the frontend .