Cisco ACI and VMware NSX-T serve different needs – ACI provides a centralised, hardware-based SDN fabric for managing physical and virtual workloads. While NSX-T offers a flexible, software-defined approach with advanced security and multi-cloud support.

VXLAN has become an industry standard for scalable network segmentation, overlay support, and improved virtual machine mobility in modern network architectures. But its deployment can be complex and require extensive configuration.