Azure Virtual Network Manager vs OpenStack Neutron

Azure Virtual Network Manager has no write-up on Specifiction yet; its figures are above.

OpenStack Neutron provides network connectivity between interface devices managed by other OpenStack services. Its API lets operators define cloud connectivity and addressing, and manage networks, subnets, and ports. Neutron supports provider, routed provider, and self-service networks, with options including VLAN, VXLAN, GRE, and Geneve. It can configure L3 forwarding, NAT, perimeter firewalls, and virtual private networks, and works mainly with OpenStack Compute to connect instances. Plug-ins and agents are available for Open vSwitch, OVN, SR-IOV, and Macvtap, although only one networking plug-in can be used at a time. Security groups provide port-level ingress and egress firewall rules, with default-deny and anti-spoofing rules. Quality-of-service options include bandwidth and packet-rate limits, DSCP marking, and minimum rates, depending on the backend. Neutron is free and open source under Apache 2.0, for Linux and self-hosted deployments. The installation guide’s example requires at least two hosts and is framed as a learning proof of concept for people with sufficient Linux experience, not a production setup.