Stop thinking of your tech stack as a menu where you pick one thing.
Think of it as a Russian nesting doll:
APIs = the language
Webhooks = the nervous system
Automation = the muscle
Databases = the memory
Interfaces = the skin
Your webhook fires an automation.
Your automation queries a database.
Your interface wraps the whole thing.
It's not "API vs. Database."
It's architecture. It's depth.
They're meant to stack.