Firebase started with the belief that apps could be built with mostly client code since it was, in many instances, easier and faster. However, there are still some cases where server code is needed, such as executing trusted code, authenticating to a third party API, or running battery intensive operations. In these instances, you had to stand up your own server — until now. Today we are excited
![Introducing Cloud Functions for Firebase](https://cdn-ak-scissors.b.st-hatena.com/image/square/190df45ec2a39064764c62ac5c00830d5a59979c/height=288;version=1;width=512/https%3A%2F%2Ffirebase.blog%2Fimg%2Fog.png)