Kinsta uses a multi-level users architecture, in a similar way as WordPress does.
They explain how it works in this guide.
In short, there are company wide roles that have access to all aspects of the company, as there are company wide roles that can see most aspects of the company, but not all.
One example is the company developer, who can access (and even delete) each site, but cannot see billing information.
Then, there are site-wide roles, which imply access only to determined sites of the lot.
You can find a full explanation of how this works in this tutorial.
At this early stage, we only have a few roles assigned, but they are deemed to grow a lot as we migrate more and more sites onto the platform.
