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Hello Samli,
Thank you for your feedback.
Please note that the question explicitly asked for a cost-effective solution.
The option that suggests setting up a hot-standby of web and application tier on the backup region and redirecting traffic in case of a disaster, while technically possible, is not the most cost-effective solution. This is because it requires a significant number of resources to be continuously running.
For a recovery time objective (RTO) of 30 minutes, a more efficient approach would be to restore backups of the EC2 snapshots for the web and application tiers, rather than maintaining a hot-standby environment.
It’s important to note that in disaster recovery, a “hot-standby” refers to the application running in the DR region. Since it’s always running, the associated costs can be quite substantial.
Make sure to read the question and the explanations carefully.
I hope this helps! Let us know if you need further clarification.
Regards,
JR @ Tutorials Dojo
