At the risk of turning this into a self-plugging topic (feel free to delete) I'd answer: BOTH.
That is, BOTH DigitalOcean AND management is the concept at LittleBizzy because there is truly no reason to develop a custom cloud interface, custom CDN, etc instead of integrating with market leaders -- unless, of course, a web host is trying to reduce (too many of?) their costs.
Our goal is quality-first -- not costs-first, and not scale-first (MaxCDN guest post on this soon!).
We also use WooCommerce on our own cloud for our homepage, which no other "WordPress hosting" company currently does, so anything we learn passes to-from our client configurations:
That being said it is great to hear about some of these, such as Kinsta, ZippyKid, etc!