In a Cloud environment, it is important to optimize the availability of an

application by implementing disaster recovery strategy. For disaster recovery

we create a backup application in another location of cloud environment. In

case of complete failure at a data center we use the disaster recovery site to

run the application.

Another aspect of cloud environment is that servers often fail or go down. In

such a scenario it is important to implement the application in such a way that

we just kill the slow server and restart another server to handle the traffic

seamlessly

https://www.bluepiit.com/blog/optimize-your-cloud/