What is the maximum number of Availability Domains you can have in a single region in OCI?

In Oracle Cloud Infrastructure (OCI), the design of the cloud architecture includes the concept of Availability Domains (ADs) to provide high availability and fault tolerance within a single region. The maximum number of Availability Domains that can exist in a single region is three.

This design allows customers to distribute their resources across multiple physical data centers, ensuring that if one Availability Domain experiences an outage, the others will remain operational. By utilizing three Availability Domains, users can achieve better redundancy and load balancing for their applications and services.

Each Availability Domain operates independently, has its own power, cooling, and physical security, and communicates with other ADs via a low-latency, high-bandwidth network. This configuration supports multi-instance deployment strategies, enabling effective disaster recovery and high availability architectures.

The other options suggest limits that exceed or do not meet the established maximum of three Availability Domains per region, which is why they do not represent the correct answer.