How many active nodes are running for an Appian Cloud instance with High Availability?

In a High Availability (HA) setup for an Appian Cloud instance, there are typically three active nodes deployed across distinct availability zones. This configuration ensures redundancy and load balancing, thus enhancing the reliability and performance of the application. The three active nodes in different availability zones can work together to provide continuous service, even if one of the zones experiences an outage.

The use of three nodes also allows for automatic failover; if one node encounters an issue, the others can seamlessly take over its responsibilities. This setup is particularly important for enterprises that require consistent uptime and performance for their business-critical applications.

The mention of "availability zones" indicates a focus on geographical diversity within a single cloud provider's infrastructure, which is essential for maintaining service availability in the event of localized failures. Therefore, the correct choice reflects the comprehensive strategy behind high availability in cloud environments.