In case you went "hey, this looks like a blatant rip-off of Divio's pages, doesn't it?" -- yeah it is, because this is the spin-off of that particular aspect from Divio.
Love the advice overall, and I've tried to apply that as I've been reworking the Redux core docs.
(Gotta say the new name's kinda odd, though.)
It means you can use the same tools (Control Panel, CLI, API) to create and manage cloud applications and their infrastructures on all those different vendors.
The idea is that Divio takes care of infrastructure/DevOps concerns so that customers can concentrate on developing applications and products. https://www.divio.com
Feel free to ask me more.
i personally dont have this need at all (all in on AWS, and am ex Netlify and very friendly with Render) so havent really needed a unified integration for multiple vendors. good luck!