Launched in Preview in January of this year, Microsoft Azure Site Recovery offers customers the ability to replicate and recover virtual machines across their own infrastructure.
The service has now exited Preview and is available for all who would like to take advantage of it. The service is currently only listed as being available in select regions. It's now available in the East and West US regions, in Europe North and Europe West, in Asia Pacific East and Southeast, and also in Japan (East and West).
Pricing is as follows:
Azure Site Recovery = $16 per month per virtual machine
Azure Site Recovery to Azure = $27 per month per virtual machine.
You can read more about the service at the official page: Azure Site Recovery