Best practice for environment variables / application settings?

Summary:

Where to put application settings?

Content (please ensure you mask any confidential information):

Hi,

We're currently developing a web app using Visual Builder (Studio) that we'll be deploying for multiple customers. What's the best practices for storing application settings that differ from one deployment to another?

Some examples settings:

• Name of customer organization
• Technical settings that are different for D, T, A, P. (not related to base urls, credentials)
• Certain preferences in behavior that are different from one customer to another

We need these to be available as variable values in our web app, so we can dynamically alter the behavior / looks etc. from one customer to another, or one environment to another, without having to change code.