Divio is a cloud management/application hosting platform. We use Docker for containerisation, and provide a unified integration layer to multiple different underlying vendors (AWS, Azure, etc).
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
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!