How to separate hosting of Backendless app content from static web content?

[mark-piller]

@Causality

Is there a safety feature I can enable to deny requests beyond a certain tier?
By “deny” I mean - throttle, queue, or stagger timing of API requests,
in order to safeguard against unexpectedly high fees.

Yes, there is. When your app is on the Scale plan, you get the following option on the Manage > Billing screen (read the text in the highlighted section):

Regards,
Mark