As your app grows in complexity, you need better ways of supplying configuration
to your app. For example, if you want to configure a new login system, you might
create one Remote Config parameter for each dynamic value you want to
control. However, configuring your login system this way is tedious, and very
hard to understand and maintain.

A better way to provide configuration for such a login system would be to use
JSON and group all of those parameters into one single parameter. This makes
editing and maintaining the `login` parameter much simpler over time.

The Firebase console provides a JSON validator and pretty-printer that you
can use when editing Remote Config parameters. When working in the
console, click the **{}** icon to open the editor.
![Animated image moving through the Firebase console GUI steps to configure complex entities with JSON](https://firebase.google.com/static/docs/remote-config/images/RCUC_4_JSON_Configurations_1_1.gif) Using the JSON editor to group parameters