Mobile edge computing abbreviated as MEC is about the cloud at edge or may be related to new term called as fog computing which is about putting many of RAN specific functionalities on virtual systems which are adaptive to load and computational requirements. MEC will help to provide right orchestration for VNF kind of architecture need for End to End networking, in term of network operation and performance optimization. MEC is best for the uses cases like for content management networks, latency sensitive applications, massive access management etc.
Virtualization is the kingpin in whole 5G conception as the required flexibility of the systems and network can be provided through it and that help to accommodate the application specific configuration with the term that provide end to end re-construction i.e. it is all about network slicing. Network slicing can also be envisaged as application defined networking that is about ad-hoc re-deployment or re-configuring network in line to the specific application requirements. As per the 5G specification, this re-deployment time is not in days but in minutes and saying precisely it is 90 minutes only.