A blue/green deployment strategy takes the dynamic infrastructure advantage of cloud computing and uses it as a basis for updating applications. Instead of running new instances in the existing environment, a new environment is created. The existing environment is now designated as blue and the new one is designated as green. Usually, a switchover of the DNS will be preformed to redirect the traffic from the blue application to the green application. This can be done gradually with a weighted round robin approach or instantly by switching the DNS over fully. Elastic Beanstalk allows us to switch the DNS over from one environment to the other within the management console or via the CLI: