VM handoff enables rapid and transparent placement changes to  executing code in edge computing use cases where the safety and  management attributes of VM encapsulation are important. This versatile  primitive offers the functionality of classic live migration but is  highly optimized for the edge. Over WAN bandwidths ranging from 5 to 25  Mbps, VM handoff migrates a running 8 GB VM in about a minute, with a  downtime of a few tens of seconds. By dynamically adapting to varying  network bandwidth and processing load, VM handoff is more than an order  of magnitude faster than live migration at those bandwidths.

Ha, K., Abe, Y., Eiszler, T., Chen, Z., Hu, W., Amos, B., Upadhyaya, R., Pillai, P., Satyanarayanan, M.
Proceedings of the Second ACM/IEEE Symposium on Edge Computing, Fremont, CA, October 2017