CloudZero

As an example, you might use one public cloud for authentication, another for Exchange servers, and another as a database.
Most multi-cloud infrastructure users are enterprises because they have multiple use cases that can leverage multiple public cloud providers.
A multi-cloud strategy involves using multiple public clouds. In contrast, a hybrid cloud strategy consists in using multiple public clouds and your company’s own data center (on-premises or private).
The on-premises infrastructure may be an in-house data center or any other IT infrastructure operating within its corporate network.
A hybrid cloud infrastructure ensures some applications, workloads, or processes remain on-premises or in a private cloud with controlled access. A multi-cloud strategy is best for organizations looking to maximize the benefits of public clouds (more about that in a moment).