Summary
In this chapter, we discussed the definitions of resilience and performance. We explored the various backup and disaster recovery solutions that hyperscalers offer. We also learned how to optimize our environments using different advisory tools that cloud providers offer. We then learned how to identify risks in the various layers: business, data, applications, and technology. We studied the various methods we can use to mitigate these risks. One of the biggest risks is that we "lose" systems without the ability to retrieve data from backups or without the possibility to failover to other systems.
To prevent systems from going down, which brings with it the risk of data loss and with that, losing business, we need to design resiliency in our environments. For real business-critical systems, we might want to have disaster recovery, but at a minimum, we need to have proper backup solutions in place. Due to this, we learned about the backup and disaster recovery...
