OTV and VXLAN differences
OTV(Overlay Transport Virtualization) is a technology that provide layer2 extension capabilities between different data centers.
otv
OTV and VXLAN
A great article on explaining what OTV is and how it compares to VXLAN http://www.routexp.com/2017/04/vxlan-and-otv-what-is-difference.html?m=1