Business continuity is one of the most important key points, especially for enterprises. Building a disaster recovery site is a must-do step to take in order to have an optimal environment. That is why Microsoft Azure provides ASR services, which can be used to build your disaster recovery site.
This service helps to ensure that your applications are up and running all the time, even if a disaster happens to your data center.
When using ASR, you can build your own disaster recovery site for your Azure VMs, your on-premises VMs and/or physical servers, or even manage replication between a primary and secondary site.
In March 2015, Microsoft announced the launch of ASR and, since then, this service has undergone many enhancements and added features according to the customers' feedback.