I suggest Cloudflare can make an official and standardized PHP source code to help partners quickly build the corresponding domain management panel, which can promote “Cloudflare” more effectively.
That’s what the API is for. How you connect to your internal system would be up to you, as it varies widely amongst partners.
There is a basic management panel source code, and everyone can develop reference based on this. But if you only rely on the API, not everyone has the ability to develop. Can be easily used and disseminated, which is conducive to the development of enterprises.