What is Cold Standby Mode?

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In the Cold Standby mode, there are only two data centers. The primary data center is up and running, whereas the secondary data center is turned on only when the primary data center goes down. On failure of the primary data center, the secondary data center replaces the primary data center. As part of disaster recovery procedure, perform the following steps in the secondary data center:

Bring up API Data Store.
Run the scripts for restore.
Bring up API Gateway post restore of data.
Reconfigure the load balancer to redirect the traffic to the secondary data center.

Cold standby mode is cost-effective in terms of data center operations. However, there is a downtime if the primary data center goes down. The RPO and RTO for cold standby mode is high as compared to rest of modes.