How many controllers do you normally need to run a multi-cloud environment consisting of OCI, Azure, and GCP?

In a typical multi-cloud environment including Oracle Cloud Infrastructure (OCI), Microsoft Azure, and Google Cloud Platform (GCP), you would commonly need just one Aviatrix controller. The Aviatrix controller is designed to centralize management and orchestration across multiple cloud environments. It allows for unified policy management, which means that a single controller can handle the networking needs and configurations for all three cloud services simultaneously.

This streamlined architecture not only simplifies overhead and reduces management complexity but also saves costs associated with maintaining multiple controllers. The controller can effectively facilitate communication between the different clouds, manage VPN and transit gateway functionalities, and ensure a consistent network experience across various cloud platforms.

Although additional controllers might be deployed in larger or more complex architectures for redundancy or specialized functions, the fundamental operation of a multi-cloud environment can efficiently be managed with just one controller, making it the practical choice in most cases.